1. Mole Problems
Solution Guide

2. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)

3. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)

4. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)

5. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)

6. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)

7. How many water molecules are found in 18.0g water?
6.02x1023 water molecules
If you had 6.02x1023 dollar bills you would need to spend $238 trillion dollars per second for every day of an 80 year life span to spend that many dollars, if you shared it with each person on the planet they would have to spend $34,000 dollars per second every day of their 80 year life span to spend it all.
$6.02x = $238,616,184,677,188.51
(80yrs ) (365 d) ( 24hr) ( 60min) (60s ) second
( 1yr ) ( 1 d) ( 1hr ) (1min)
In any measurable sample of matter there are too many particles to count directly!
Atoms are exceedingly small!!!

8.
One H has a relative mass of ______ amu One C has a relative mass of _______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu
H have a relative mass of _____ amu C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

9.
One H has a relative mass of __1___ amu One C has a relative mass of _______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu
H have a relative mass of _____ amu C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

10.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu
H have a relative mass of _____ amu C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

11.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of ______ amu
H have a relative mass of _____ amu C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

12.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of __ amu
H have a relative mass of ____ amu C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

13.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of __ amu
H have a relative mass of 100 amu _ C have a relative mass of ______ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

14.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of __ amu
H have a relative mass of 100 amu _ C have a relative mass of _ amu
H have a relative mass of ______ amu C have a relative mass of ______ amu

15.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of __ amu
H have a relative mass of 100 amu _ C have a relative mass of _ amu
H have a relative mass of 1million amu C have a relative mass of ______ amu

16.
One H has a relative mass of __1___ amu One C has a relative mass of ___12__ amu
H have a relative mass of _10___ amu C have a relative mass of __ amu
H have a relative mass of 100 amu _ C have a relative mass of _ amu
H have a relative mass of 1million amu C have a relative mass of 12 million amu

17. 1a) The mass of the sample of carbon is
always ______ more than an equivalent
number of hydrogens

18. Mole Unit Questions 1a) The mass of the sample of carbon is
always _12x__ more than an equivalent
number of hydrogens

19. Mole Unit Question 1
6.02x1023 atoms of hydrogen have a mass of 1.0 g that equals the atomic mass of hydrogen found on the periodic table
6.02x1023 atoms of carbon have a mass of 12.0 g that equals the atomic mass of carbon found on the periodic table

20. Mole Unit Question 1
6.02x1023 atoms of hydrogen have a mass of 1.0 g that equals the atomic mass of hydrogen found on the periodic table
6.02x1023 atoms of carbon have a mass of 12.0 g that equals the atomic mass of carbon found on the periodic table

21. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

22. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

23. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

24. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

25. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

26. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

27. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

28. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

29. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

30. Questions 2-8 2. What is the mass of 3.01 x 1023 carbon–12 atoms?
3.01 x is one half of 6.02 x 1023 therefore the mass will be one half of 12 g = 6g
3. What is the mass of x 1023 carbon–12 atoms?
1.51 x is one fourth of 6.02 x 1023 therefore the mass will be one fourth of 12 g = 3g
4. What is the mass of x 1023 carbon–12 atoms?
12.04 x 1023 is twice 6.02 x 1023 therefore the mass will be twice 12 g = 24 g

31. Questions 2-8 5. What is the mass of 24.01 x 1023 carbon–12 atoms?
24.01 x 1023 is four times 6.02 x 1023 therefore the mass will be four time 12 g = 48g

32. Questions 2-8 5. What is the mass of 24.01 x 1023 carbon–12 atoms?
24.01 x 1023 is four times 6.02 x 1023 therefore the mass will be four time 12 g = 48g

33. Questions 2-8 5. What is the mass of 24.01 x 1023 carbon–12 atoms?
24.01 x 1023 is four times 6.02 x 1023 therefore the mass will be four time 12 g = 48g

34. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

35. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

36. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

37. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

38. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

39. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

40. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

41. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

42. Questions 2-8 6. How many carbon atoms are in 36.0 g
36.0g is three times 12.0g therefore there are three times 6.02x1023 C = 18.06x1023C = 1.806x1024 C
7. How many carbon atoms are in 4.0 g
4.0 g is one third of 12.0g therefore one third of 6.02x1023 C = 2.01x1023C
8. How many carbon atoms are in 1.0 g
1.0 g is one twelfth of 12.0g therefore one twelfth x1023 C = 5.01x1022 C

43. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

44. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

45. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

46. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

47. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

48. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

49. Bonus Question 6.02x1023 C = 12.0 g C 1.0 x106 C = x
Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C = 1.99x10-17g C

50. Bonus Question Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C
1.0 x106 C ( g C ) = 1.99x10-17g C
(6.02x1023 C )

51. Bonus Question Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C
1.0 x106 C ( g C ) = 1.99x10-17g C
(6.02x1023 C )

52. Bonus Question Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C
1.0 x106 C ( g C ) = 1.99x10-17g C
(6.02x1023 C )

53. Bonus Question Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C
1.0 x106 C ( g C ) = 1.99x10-17g C
(6.02x1023 C )

54. Bonus Question Cross multiply
1.0 x106 C multiplied by 12.0 g then divided by
6.0x1023 C
1.0 x106 C ( g C ) = 1.99x10-17g C
(6.02x1023 C )

55. 6.02 x 1023 = P.T. grams 9. How many silver atoms are in 25.0 grams of

56. 6.02 x 1023 = P.T. grams 9. How many silver atoms are in 25.0 grams of
25.0g Ag

57. 6.02 x 1023 = P.T. grams 9. How many silver atoms are in 25.0 grams of
25.0g Ag x 1023 Ag =

58. 6.02 x 1023 = P.T. grams 9. How many silver atoms are in 25.0 grams of
25.0g Ag x 1023 Ag =
107.9g

59. 6.02 x 1023 = P.T. grams 9. How many silver atoms are in 25.0 grams of
25.0g Ag x 1023 Ag =1.39x1023 Ag
107.9Ag

60. 6.02 x 1023 = P.T. grams 10. What is the mass of 1.00 x 109 silver
atoms?
1.00 x 109 Ag

61. 6.02 x 1023 = P.T. grams 10. What is the mass of 1.00 x 109 silver
atoms?
1.00 x 109 Ag ( g Ag ) =

62. 6.02 x 1023 = P.T. grams 10. What is the mass of 1.00 x 109 silver
atoms?
1.00 x 109 Ag ( g Ag ) =
(6.02 x 1023 Ag )

63. 6.02 x 1023 = P.T. grams 10. What is the mass of 1.00 x 109 silver
atoms?
1.00 x 109 Ag ( g Ag ) = 1.79 x g Ag
(6.02 x 1023 Ag )

64. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

65. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

66. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

67. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

68. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

69. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

70. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

71. 6.02 x 1023 = P.T. grams 11. What is the mass of 2.00 x 1023 gold
atoms?
2.00 x 1023 Au ( g Au ) = 65.4 g Au
(6.02 x 1023 Au )
12. How many gold atoms are in 100 grams of
gold?
100g Au x 1023 Au = 3.06 X1023 Au
197.0 g Au

72. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

73. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

74. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

75. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

76. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

77. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

78. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

79. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

80. 6.02 x 1023 = P.T. grams
13. What is the mass x platinum atoms?
2.00 x Pt ( g Pt ) = 648 g Pt
(6.02 x 1023 Pt )
14. What is the mass of 2.00 x silicon atoms?
2.00 x 1022 Si ( g Si ) = .93 g Si
(6.02 x 1023 Si )

81. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

82. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

83. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

84. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

85. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

86. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

87. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

88. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

89. 6.02 x 1023 = P.T. grams
15. How many silicon atoms are in 12.0 grams of silicon atoms?
12g Si x 1023 Si = 2.57X1023 Si
28.1g Si
16. How many lead atoms are in 12.0 grams of lead?
12.0g Pb x 1023 Pb = 3.49 X1022 Pb
207.2 g Pb

90. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

91. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

92. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

93. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

94. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

95. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

96. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 ) )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

97. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

98. 6.02 x 1023 = P.T. grams 17. What is the mass of 2.0 x109 Pb atoms?
2.0 x109 Pb g Pb =6.88x10-13g Pb
6.02 x 1023 Pb
18. What is the mass of 1.51 x1023 C6H12O6?
1.51 x1023 C6H12O6 (180 g C6H12O6 )= 45.0g C6H12O6
(6.02 x 1023 C6H12O6)

99. 6.02 x 1023 = P.T. grams
19. How many copper (II) nitrate are in 454g Cu(NO3)2
454g Cu(NO3) x 1023 Cu(NO3)2 =1.46x1024 Cu(NO3)2
187.5g Cu(NO3)2

100. 6.02 x 1023 = P.T. grams
19. How many copper (II) nitrate are in 454g Cu(NO3)2
454g Cu(NO3) x 1023 Cu(NO3)2 =1.46x1024 Cu(NO3)2
187.5g Cu(NO3)2

101. 6.02 x 1023 = P.T. grams
19. How many copper (II) nitrate are in 454g Cu(NO3)2
454g Cu(NO3) x 1023 Cu(NO3)2 =1.46x1024 Cu(NO3)2
187.5g Cu(NO3)2

102. 6.02 x 1023 = P.T. grams
19. How many copper (II) nitrate are in 454g Cu(NO3)2
454g Cu(NO3) x 1023 Cu(NO3)2 =1.46x1024 Cu(NO3)2
187.5g Cu(NO3)2

103. 6.02 x 1023 = P.T. grams
19. How many copper (II) nitrate are in 454g Cu(NO3)2
454g Cu(NO3) x 1023 Cu(NO3)2 =1.46x1024 Cu(NO3)2
187.5g Cu(NO3)2

104. Mole Concept 6.02 x 1023 is known as _____________________ number.
6.02 x 1023 particles is known as __________of particles
just as 12 particles is known as a _______
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or ___________ of those particle.
__________ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

105. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as __________of particles
just as 12 particles is known as a _______
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or ___________ of those particle.
__________ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

106. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as _1mole__of particles
just as 12 particles is known as a _______
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or ___________ of those particle.
__________ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

107. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as _1mole__of particles
just as 12 particles is known as a _dozen__
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or ___________ of those particle.
__________ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

108. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as _1mole__of particles
just as 12 particles is known as a _dozen__
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or __1mole__ of those particle.
__________ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

109. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as _1mole__of particles
just as 12 particles is known as a _dozen__
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or __1mole__ of those particle.
___P.T.____ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
___________ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

110. Mole Concept 6.02 x 1023 is known as ___Avogadro’s___ number.
6.02 x 1023 particles is known as _1mole__of particles
just as 12 particles is known as a _dozen__
The mass of 1 particle in atomic mass units (amu) is equivalent to the mass of 6.02 x of those particles or __1mole__ of those particle.
___P.T.____ g = 1 mole of particles = 6.02 x 1023 particles
atomic mass / molecular mass / formula mass 12
__12.0____ g C = 1.00 moles of C = 6.02 x 1023 C atoms 6

111. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

112. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

113. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

114. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

115. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

116. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

117. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
20. What is the mass of 2 moles C?
2 mol C ( 12.0g C ) = 24.0g C
( 1mol C )
21. What is the mass of 7.5x1020C?
7.5x1020C ( 12.0g C ) = .015 g C
( 6.02x1023C)

118. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

119. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

120. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

121. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

122. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

123. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

124. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

125. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
22. How many moles of carbon are in 1.806x1025 C atom sample?
1.806x1025 C(1mole C ) = 30 moles C
(6.02x1023 C)
23. How many atoms of carbon are in 100g C?
100gC ( 6.02x1023C) = 5.04x1024 C atoms
( 12.0g C )

126. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
25. How many atoms of carbon are in .750 mole sample?
.750 mole C ( 6.02 x1023 C) = 4.52 x1023 C
1mole C

127. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
25. How many atoms of carbon are in .750 mole sample?
.750 mole C ( 6.02 x1023 C) = 4.52 x1023 C
1mole C

128. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
25. How many atoms of carbon are in .750 mole sample?
.750 mole C ( 6.02 x1023 C) = 4.52 x1023 C
1mole C

129. Mole Concept II 6.02 x 1023 = P.T. grams = 1.0 mole
25. How many atoms of carbon are in .750 mole sample?
.750 mole C ( 6.02 x1023 C) = 4.52 x1023 C
1mole C

130. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

131. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

132. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

133. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

134. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

135. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

136. 6.02 x 1023 = P.T. grams 26. What is the mass of 3.50 moles of C2H5OH?
3.50 mole C2H5OH g C2H5OH=161 g C2H5OH
1mole C2H5OH
27. How many molecules are in .250 mole of
C2H5OH?
.250 mole C2H5OH 6.02 x 1023 C2H5OH= 1.51 X1023

137. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

138. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

139. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

140. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

141. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

142. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

143. 6.02 x 1023 = P.T. grams = 1.0 mole
28. How many moles of C2H5OH are in a 1.0x10 3 molecule sample of C2H5OH?
1.00 x 103 C2H5OH 1mole C2H5OH = 1.67x10-21moles x 1023 C2H5OH
29. How many moles of C2H5OH are in 12.0 grams of C2H5OH?
12.0 gC2H5OH 1mole C2H5OH= .26 moles C2H5OH
46.0 g C2H5OH

144. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

145. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

146. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

147. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

148. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

149. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

150. 6.02 x 1023 = P.T. grams = 1.0 mole
30. What is the mass of 2.50 moles of C2H5OH?
2.50 mole C2H5OH 46.0g C2H5OH = 115 g C2H5OH
1mole C2H5OH
31. How many molecules are found in 454 g C2H5OH
454 gC2H5OH 6.02 X C2H5OH= 5.94X10 24
46.0 g C2H5OH

151. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

152. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

153. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

154. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

155. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

156. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

157. 6.02 x 1023 = P.T. grams = 1.0 mole
32. How many moles are in 0.10g Ca(NO3)2 ?
0.10 g Ca(NO3)2 1mole Ca(NO3)2 = mol Ca(NO3)2
164.1g Ca(NO3)2
33. What is the mass of .125 moles Ca(NO3)2?
.125 moles Ca(NO3) g Ca(NO3)2 =20.5 g Ca(NO3)2
1 mole Ca(NO3)2

158. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

159. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

160. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

161. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

162. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

163. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

164. 6.02 x 1023 = P.T. grams = 1.0 mole
34. How many units are in 454g Ca(NO3)2?
454g Ca(NO3) X Ca(NO3)2 = 1.67x1024 Ca(NO3)2
164.1g Ca(NO3)2
35. What is the mass of .50 moles Ca(NO3)2?
.50 moles Ca(NO3)2(164.1g Ca(NO3)2=82.1g Ca(NO3)2
(1mol Ca(NO3)2

165. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

166. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

167. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

168. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

169. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

170. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

171. 6.02 x 1023 = P.T. grams = 1.0 mole
36. How many units are in .250 mol Ca(NO3)2?
.250 mole Ca(NO3)2 6.02x1023 Ca(NO3)2 =1.51x1023 Ca(NO3)2
1mole Ca(NO3)2
37. How many moles are in 1.0x109 Ca(NO3)2?
1.0x109 Ca(NO3)2 ( 1mole Ca(NO3)2= 1.66x10-15 mol
6.02x1023 Ca(NO3)2

172. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

173. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

174. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

175. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

176. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

177. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

178. Empirical Formula Extra Credit
50 g S 50 g O
50g S ( 1mole S) = 1.56 mol S1.0
( 32 g S )
50 g O ( 1 mol O ) = 3.13 mol O2.0
( 16 g O )
SO2

179. Empirical formula
Count the number of particles of each element by determining the number of moles of each element
Divide by the smallest number of moles in order to determine the simplest whole number ratio that the elements combine in to form the compound
If the ratios are not whole numbers multiply each ratio by a common factor until they are whole number ratios

180. Empirical formula
Count the number of particles of each element by determining the number of moles of each element
Divide by the smallest number of moles in order to determine the simplest whole number ratio that the elements combine in to form the compound
If the ratios are not whole numbers multiply each ratio by a common factor until they are whole number ratios

181. Empirical formula
Count the number of particles of each element by determining the number of moles of each element
Divide by the smallest number of moles in order to determine the simplest whole number ratio that the elements combine in to form the compound
If the ratios are not whole numbers multiply each ratio by a common factor until they are whole number ratios

182. Empirical formula
Count the number of particles of each element by determining the number of moles of each element
Divide by the smallest number of moles in order to determine the simplest whole number ratio that the elements combine in to form the compound
If the ratios are not whole numbers multiply each ratio by a common factor until they are whole number ratios

183. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

184. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

185. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

186. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

187. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

188. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

189. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

190. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

191. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

192. Empirical Formula A) 35.6g Co and 64.4 g Cl
35.6gCo(1mole Co)=.603 mol Co1.0
(59.0gCo ) .603
64.4gCl ( 1mole Cl)=1.81 mol Cl3.0
( 35.5 g Cl) .603
CoCl3

193. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

194. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

195. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

196. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

197. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

198. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

199. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

200. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

201. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

202. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

203. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

204. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

205. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

206. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

207. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

208. Empirical Formula B) CoCl2 C) 52.9gAl and 47.1gO
52.9gAl(1mole Al)= 1.96 mol Al1.0
(27.0g Al ) 1.96
47.1 gO ( 1mole O)=2.94 mol O1.5
( g O) 1.96
Al1.0O1.5 x 2 = Al2O3

209. Empirical Formula D) MgO E) 2.83gK, .435g C, 1.735 g O
2.83 g K ( 1 mole K ) = mole K2
( 39.1 g K )
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g O ( 1 mole O ) = .108 mole O3
( g O )

210. Empirical Formula E) 2.83gK, .435g C, 1.735 g O
2.83 g K ( 1 mole K ) = mole K2
( 39.1 g K )
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g O ( 1 mole O ) = .108 mole O3
( g O )

211. Empirical Formula E) 2.83 g K ( 1 mole K ) = .0724 mole K2
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g C ( 1 mole O ) = .108 mole O3
( g O )

212. Empirical Formula E) 2.83 g K ( 1 mole K ) = .0724 mole K2
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g C ( 1 mole O ) = .108 mole O3
( g O )

213. Empirical Formula E) 2.83 g K ( 1 mole K ) = .0724 mole K2
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g C ( 1 mole O ) = .108 mole O3
( g O )

214. Empirical Formula E) 2.83 g K ( 1 mole K ) = .0724 mole K2
.435 g C ( 1 mole C ) = mole C
( g C )
1.735 g C ( 1 mole O ) = .108 mole O3
( g O )

215. Empirical Formula F) ZnSO3 G) CaC2O4 H) NaCN I) Al2S3O12  Al2(SO4)3
J) Fe2S3O12  Fe2(SO4)3
K) MgCl2O8  Mg(ClO4)2