1. Drill: Calculate the % composition of each element in H 4 N 2 O 3

2. Return Tests & Review Drill & Test

3. 4 H = 4.0 sum 2 N = 28.0= 80.0 3 O = 48.0 % H = 4.0/80.0 x 100 % = 5.0% H % N = 28.0/80.0 x 100 % = 35.0 % N % O = 48.0/80.0 x 100 % = 60.0 % O

4. Name each of the following: CuOMnS SeO 2 Na 2 O SnCl 2 MnF 2 HClO 3 CCl 4

5. Anyone who missed or failed the test may retake a similar test within a week to bring the grade up to 60.

6. Collect Labs

7. CHM II HW Review PP 06 Work the problems attached to Poly’s website.

8. Are there any questions on previous material?

9. Molar Conversions

10. Moles The standard unit of measure for the amount of a substance

11. Dozen = 12 of anything

12. Moles = 6.022 x 10 23 of anything

13. Moles = the amount of a substance that would = its mass in g from the PT

14. Describe the factor label method of conversions

15. Molar Conversions Mass to moles Volume of a gas to moles Particles to moles Volume of a solution to moles

16. moles mass volume of a gas Atoms or molecules solution volume

17. Moles First

18. Mass to Moles Use atomic masses from the periodic table NaCl = 58.5 g/mole

19. Gas Volume to Moles At STP: 22.4 L/mole Non-STP: PV = nRT PV RT n =

20. Particles to Moles Use Avogadro’s Number 6.02 x 10 23 atoms, molecules, etc/mole

21. Soln Volume to Moles Multiply molarity times volume n = M x V

22. Solution Measures Molarity (M) = the number of moles of solute per liter of solution. Others later

23. Convert 7.0 g of silicon to moles

24. Convert 250 g of CaCO 3 to moles

25. Convert 3.0 moles of helium to grams

26. Convert 11.2 L of oxygen gas at STP to moles

27. Convert 0.20 moles of helium to volume at STP

28. Convert: 2.0 x 10 24 atoms He to moles

29. Drill: Convert 3.0 moles of glucose to molecules

30. Review & Collect Drill & HW

31. CHM II HW Review PP-6 Work the attached problem & turn it in on Monday We will have a lab on Friday.

32. Are there any questions on previous material?

33. Convert 250 mL of 0.10 M HCl to moles

34. Convert 6.8 g NH 3 to volume of gas at STP

35. Drill: Determine the volume required to make 60.0 g NaOH into a 0.75 M solution

36. Review & Collect Drill & HW

37. CHM II HW Review PP-6 Complete the attached assignment & turn it in tomorrow.

38. Are there any questions on previous material?

39. Convert 3.0 x 10 25 molecules of CO 2 to mass in kg

40. Drill: Calculate the number molecules in 32  g of Fe 2 O 3

41. Calculate the number of atoms in 16 ng of Fe 2 (SO 4 ) 3

42. Empirical Formula

43. Lowest whole number ratio of elements in a compound C 6 H 12 O 6 : EF = CH 2 O

44. Determining Empirical formulas from percent composition

45. Assume 100 g Change % directly to grams Use molar conversions to convert grams to moles Divide each molar amount by the smallest molar amount

46. Find empirical for a compound with: 70.0 % Fe 30.0 % O

47. Find empirical for a compound with: 40 % Ca 12 % C 48 % O

48. Find empirical for a compound with: 40.0 % C 6.7 % H 53.3 % O

49. Molecular Formula

50. The actual whole number for each element in the compound

51. Molecular Formula C 6 H 12 O 6 Empirical Formula CH 2 O

52. Solving MF from EF 1) Solve empirical mass 2) Divide EM into MM 3) Multiply EF by quotient

54. Drill: Calculate the mass of solute required to make 40.0 mL of 0.25 M Pb(NO 3 ) 2

55. Test Review on Nomenclature, Molar conversions, & % Composition.

56. Calculate the % composition of each element in Pb(NO 3 ) 2

57. Calculate the empirical formula of a substance containing 62.7 % Po, 28.8 % O, & 8.4 % N.

58. Calculate the molecular formula of a substance with an empirical formula of NH 2 & a molecular mass of 32 g/mole.

59. Name each of the following: SeOMgS PbO 2 Cl 2 O KNO 3 ScCl 3

60. Derive formulas for each: Cesium oxide Barium chloride Calcium phosphate Manganese(II) chlorate

61. Name each of the following: NH 4 ClBaSO 4 KC 2 H 3 O 2 K 2 HPO 3 KNO 3 CuBrO Li 2 CO 3 MgC 2 O 4

62. Name each of the following: HClH 2 SO 4 H 2 S H 3 PO 3 HNO 3 HBrO H 2 CO 3 HBrO 4

63. Calculate the number of hydrogen atoms in 1.8 kg of PH 5.

64. Calculate the volume at STP of 6.0 ng of NO.

65. Calculate the mass of KBr required to make 250 mL of a 0.40 M solution.