1. The Basic Chemical Unit
The Mole
The Basic Chemical Unit

2. A Mole is :
A chemical quantity
A Mole of any substance is Chemically equivalent to a mole of any other substance

3. particles as the number of atoms in exactly 12.0 grams of Carbon-12.
A Mole is :
Anything that has the
same number of
particles as the number
of atoms in exactly
12.0 grams of
Carbon-12.

4. Avogadro’s Number
6.02 x 1023

5. Representative Particles
HOW TO
COUNT

6. Elements
Atoms

7. Covalent Compounds
Molecules

8. Ionic Compounds
Formula Units

9. One Mole of : Carbon = 6.02 x 1023 Carbon Atoms
Silicon = 6.02 x Silicon atoms

10. One Mole of : CO2 = 6.02 x 1023 Carbon DiOxide Molecules
HNO3 = 6.02 x Nitric Acid Molecules

11. One Mole of : Platinum = _______ Platinum Atoms
Scandium = ______ Scandium atoms

12. One Mole of : CaCO3 = _______ Calcium Carbonate molecules
C12H22O11 = ______ Sugar molecules

13. Molar Mass

14. Defination
The mass of one
mole of a
substance.

15. One Mole of : Carbon = 12.0 g Silicon = 28.1 g Barium = 137.3 g
Helium = 4.0 g

16. One Mole of : Element = (molar mass) g Compound = (mol mass) g
Substance = (mol mass) g

17. One Mole of : Aluminum = ____ g Arsenic = ____ g Silver = _____ g
Xenon = _____ g

18. One Mole of : CO2 = 44.0 g SO3 = 80.1 g BaSO4 = 233.4 g
(NH4)3PO4 = g

19. One Mole of : CaCl2 = ____ g CoCO3 = ____ g Pb(NO3)2 = _____ g
Al2(CO3)3 = _____ g

20. One Mole of : CaCl2 = 111.1 g CoCO3 = 118.9 g Pb(NO3)2 = 331.2 g
Al2(CO3)3 = g

21. Molar Volume

22. Molar Volume
The volume of
one mole of

23. STP
Standard
Temperature and
Pressure

24. 1 mole of STP
22.4
liters

25. Does not
matter what
the gas is.

26. Converting between Moles and Grams:
1 mol = (molar mass) g
Conversion factors:
__ mol x
___ g x

27. Converting between Moles and Grams:
2.8 mol Ag = ? g Ag
2.8 mol x
57.9 g Mg = ? mol Mg
57.9 g x

28. Converting between Moles and Atoms:
2.8 mol Ag = ? atoms of Ag
2.8 mol x
57.9 g Mg = ? atoms Mg
57.9 g x

29. Convert 14.9 g H2O into moles
14.9 g x
1 mol
18.02 g H2O
= mol

30. Convert 3.4 mol H2O into grams
3.4 mol x
18.02 g H2O
1 mol
= 61.2 grams

31. Convert 25.1 g of CO2 into moles:
25.1 g x
1 mol CO2
44.01 g CO2
= mol

32. Convert 35.8 g H2O into molecules:
35.8 g x
6.02x1023molecules
18.02 g H2O
= 1.20x1024molecules

33. Convert 0.191 moles of Cl2 into molecules:
0.191 mol x
6.02x1023molecules
1 mol
= 1.15x1023molecules

34. Convert 2.88x1024 molec- ules of Cl2 into moles:
2.88x1024 molecules x
1 mol
6.02x1023molecules
= 4.78 moles

35. What is the mass of 15 atoms of gold?
1 mole
15 atoms x
6.02x1023 atoms g X
1 mole

36. What is the mass of 15 atoms of gold?
= 4.91 x g