Take 04

1. Simplest Formula Prepared by: Stephen Boylan October 20, 2009

2. Simplest Formula . . .

3. Simplest Formula - Simple001 A. Combustion in Excess oxygen 12.795 g. HC ----> 32.689 g. CO2 + 13.377 g. H2O B. 5 Step Calculation C. The Simplest Formula . Cx Hy Oz

4. Molar Mass CO2 Element Number Atomic Mass Formula n Units, amu Mass, C 1 12.01 12.01 O 2 16.00 32.00 44.01grams per mole CO2

7. Element Number Atomic Mass Formula

8. n Units, amu Mass, n(amu)

9. H 2 1.008 2.016

11. O 1 16.00 16.00

12. 18.02 grams per

13. mole H2O

15. 2.0 Calculate the grams of carbon, hydrogen and oxygen.

17. 12.795g. HC --> 32.689 g CO2 + 13.377 g. H2O

18. C:

19. 32.689 grams CO2 12.01 grams C = 8.921 g. C

20. 44.01 grams CO2

21. H:

22. 13.377 grams H2O 2x1.008 grams H = 1.497 g H

23. 18.02 grams H2O

24. O:

25. 12.795 g HC - 8.921g C - 1.497 g H= 2.377 g O

28. C: 8.921 g. C 1 mole C = 0.7429 moles C

29. 12.01 grams C

31. H: 1.497 g. H 1 mole H = 1.485 mole H

32. 1.008 grams H

35. O: 2.377 g. O 1 mole O = 0.1485 mole O

38. C: 0.7429 moles C 1 = 5.003 ~ 5 moles C

39. 0.1485

40. H: 1.485 mole H 1 = 10 moles H

41. 0.1485

42. O: 0.1485 mole O 1 = 1 moles O

43. 0.1485

46. The End