2. Template by Bill Arcuri, WCSD Click Once to Begin JEOPARDY! Chemistry Final Review

3. Template by Bill Arcuri, WCSD JEOPARDY! 100 200 300 400 500 Avogadro’s Number Mole Conversions Empirical Formulas Stoichiometry 1 Stoichiometry 2 Misc.

4. Template by Bill Arcuri, WCSD Daily Double Graphic and Sound Effect! DO NOT DELETE THIS SLIDE! Deleting it may cause the game links to work improperly. This slide is hidden during the game, and WILL not appear. In slide view mode, copy the above (red) graphic (click once to select; right click the border and choose “copy”). Locate the answer slide which you want to be the daily double Right-click and choose “paste”. If necessary, reposition the graphic so that it does not cover the answer text. Daily Double!!!

5. Template by Bill Arcuri, WCSD What is Avogadro’s Number?

6. Template by Bill Arcuri, WCSD 6.022 x 10 23

7. Template by Bill Arcuri, WCSD What does Avogadro’s Number represent?

8. Template by Bill Arcuri, WCSD It represents the number of molecules per mole of substance.

9. Template by Bill Arcuri, WCSD How many molecules are in 3.6 moles of Silver (Ag)?

10. Template by Bill Arcuri, WCSD 2.2 x 10 23 molecules Ag

11. Template by Bill Arcuri, WCSD How many moles are in 1.240 x 10 40 molecules of Barium (Ba)?

12. Template by Bill Arcuri, WCSD 2.059 x 10 16 moles of Ba

13. Template by Bill Arcuri, WCSD How many hydrogen molecules are present in 2.356 x 10 19 moles of H 2 O?

14. Template by Bill Arcuri, WCSD 2.838 x 10 43 molecules of H

15. Template by Bill Arcuri, WCSD How many moles are present in 1.254 x 10 45 molecules of Nitrogen?

16. Template by Bill Arcuri, WCSD 2.082 x 10 21 moles of N

17. Template by Bill Arcuri, WCSD How do you go about converting moles to grams or grams to moles?

18. Template by Bill Arcuri, WCSD Use the molar mass

19. Template by Bill Arcuri, WCSD Calculate the number of H atoms in.350 mol of C 6 H 12 O 6 ?

20. Template by Bill Arcuri, WCSD 2.53 x 10 24 H atoms

21. Template by Bill Arcuri, WCSD Arrange the following samples in order of increasing # of C atoms: (a) 12 grams C, (b) 1 mol C 2 H 2, (c) 9 x 10 23 molecules of CO 2

22. Template by Bill Arcuri, WCSD (a), (c), (b)

23. Template by Bill Arcuri, WCSD How many molecules of O are in 12.24 g of H 2 O?

24. Template by Bill Arcuri, WCSD 4.095 x 10 23 molecules of O

25. Template by Bill Arcuri, WCSD What is an empirical formula?

26. Template by Bill Arcuri, WCSD It is a chemical formula that tells us the ratio of atoms within the compound with the smallest integers.

27. Template by Bill Arcuri, WCSD What is the step-by-step process that leads to the empirical formula from grams of each element?

28. Template by Bill Arcuri, WCSD Grams of each element  Use molar mass to convert  Moles of each element  Calculate mole ratio  empirical formula

29. Template by Bill Arcuri, WCSD Ascorbic acid contains 40.92% C, 4.58% H, and 54.50% O by mass. Find the empirical formula.

30. Template by Bill Arcuri, WCSD C3H4O3C3H4O3

31. Template by Bill Arcuri, WCSD What is the molecular formula of mesitylene if its molecular weight is 120 amu and its empirical formula is C 3 H 4 ?

32. Template by Bill Arcuri, WCSD C 9 H 12

33. Template by Bill Arcuri, WCSD Combusting.255 g of isopropyl alcohol produces.561 g of CO 2 and.306 g of water. Determine the empirical formula of isopropyl alcohol.

34. Template by Bill Arcuri, WCSD C3H8OC3H8O

35. Template by Bill Arcuri, WCSD How many grams are in.239 moles of water?

36. Template by Bill Arcuri, WCSD 4.30 grams of water

37. Template by Bill Arcuri, WCSD How many liters are in 2.09 moles of water? (1g water = 1 cm 3 )

38. Template by Bill Arcuri, WCSD.0376 L

39. Template by Bill Arcuri, WCSD How many molecules of C are in 7.05 L of CO 2 ?

40. Template by Bill Arcuri, WCSD 1.90 x 10 23 molecules of C

41. Template by Bill Arcuri, WCSD How many moles of H 2 O are formed when 6.79 grams of C 2 H 4 O 2 are combusted in open air?

42. Template by Bill Arcuri, WCSD.226 moles of water

43. Template by Bill Arcuri, WCSD How many grams of H are produced when 9.2 grams of C 2 H 4 O 2 are combusted in air?

44. Template by Bill Arcuri, WCSD.61 grams of H

45. Template by Bill Arcuri, WCSD What ratio is used to convert b/w amounts of reactants & products in a reaction?

46. Template by Bill Arcuri, WCSD Mole ratio

47. Template by Bill Arcuri, WCSD How many moles of O 2 are used to make 2.3 moles of CO 2 ?

48. Template by Bill Arcuri, WCSD 2.3 moles of O 2

49. Template by Bill Arcuri, WCSD How many grams of NaOH form when 4.2 moles of Na 2 O and 4.2 moles of water combine?

50. Template by Bill Arcuri, WCSD 340 grams of NaOH

51. Template by Bill Arcuri, WCSD How many moles of sulfuric acid form when.356 grams of SO 3 and 1.98 grams of water combine? What is the limiting reactant?

52. Template by Bill Arcuri, WCSD.00444 moles of acid, SO 3 Daily Double!!!

53. Template by Bill Arcuri, WCSD How many liters of.36 M HCl does it take to react with excess Magnesium hydroxide to form 4.55 grams of Magnesium chloride?

54. Template by Bill Arcuri, WCSD.27 L HCl

55. Template by Bill Arcuri, WCSD What are the units used to convert moles to grams or grams to moles?

56. Template by Bill Arcuri, WCSD Molar Mass- Grams per mole (g/mol)

57. Template by Bill Arcuri, WCSD What is the difference between a molecular & empirical formula?

58. Template by Bill Arcuri, WCSD An empirical formula reflects the smallest ratio of atoms, while the molecular formula does not.

59. Template by Bill Arcuri, WCSD How many molecules of Cl are in 9.67 x 10 4 grams of Magnesium chloride?

60. Template by Bill Arcuri, WCSD 1.22 x 10 27 molecules of Cl

61. Template by Bill Arcuri, WCSD How many grams of N are present in 35 mL of.40 M NH 4 OH solution?

62. Template by Bill Arcuri, WCSD.20 grams of N

63. Template by Bill Arcuri, WCSD If the empirical formula of a compound is C 4 H 8 O and the mass of the compound is 216 grams, what is the molecular formula?

64. Template by Bill Arcuri, WCSD C 12 H 24 O 3

65. Template by Bill Arcuri, WCSD Final Jeopardy What is the molecular formula of a compound with empirical formula CH 4 and mass 144g?

66. Template by Bill Arcuri, WCSD Click Once to Begin C 9 H 36