Provide the answers to the following questions.
1. How many meters are in 1.5 kilometers? __________________________
2. How many grams are in 20 kilograms? _________________________
3. How many milliliters are in 3.7 liters? _________________________
4. How many milligrams are in 6.8 grams? __________________________

Write the following numbers in scientific notation.
5. 14,729 _______________________
6. 369 _______________________
7. 0.0059 _______________________

Give the number of significant figures in the following numbers.
8. 26,400 _____________________
9. 0.0140 _____________________

10. Round off 26,060 to three significant figures. _______________________

11. Solve and express your answer in scientific notation. ____________________
625 x 5200
0.0013 x 0.025

12. A group measures a quantity and the result is 25.9. The actual value is 25.6. What is the percent error in the measurement?

13. Find the density in g/cm3 of a rectangular piece of granite which is 2.00cm x 2.0cm x 9.00cm and has a mass of 108g.

14. What amount of heat (in joules) would be produced by raising the temperature of 152 grams of water by 9°C?

15. Find the percent composition of iron and oxygen in ferric oxide.

Complete the table below.
Element Atomic
Number Mass
Number Protons Electrons Neutrons
16. Al 13 27
17. Be 9 4
18. Bi 83 209
19. Ca 20 20
20. C 6
21. F 9
22. P-3 15
23. Mg2+ 24

Fill-in the blanks on the following table.
Energy Level Sublevel Number of Orbitals Maximum
Number of Electrons
24. 1
25. 2
26. 3
27. 4

28. What elements are present in SF6? ¬¬¬¬¬¬__________________ and _______________
29. How many atoms are in the formula above? _____________________

Write the formulas for the following.
30. sodium chloride _____________ 37. sodium nitrate ________________

31. sodium sulfide _____________ 38. sodium carbonate _____________

32. sodium phosphate ______________

Name the following compounds.
33. KClO3 ________________________________

34. Cu(NO2)3 ______________________________

35. KOH _________________________________

36. HBr (aq) _______________________________

37. Calculate the empirical and molecular formula for the following compound.

38. Complete the following reaction:
2C2H2 + 5O2 ? _______________________________

39. How many atoms enter the reaction? ___ How many atoms leave the reaction? __

40. How many molecules of carbon dioxide produced? __________

41. How many atoms of oxygen gas are consumed? __________

For questions 42-45 complete the word problem by predicting the product, write the balanced equation and identify the type of reaction.
42. Ammonia when heated produces ______________________________
Type of reaction: _______________________
Equation:

43. Carbon reacts with ferric oxide produces ____________________________
Type of reaction: ________________________
Equation:

44. Chlorine gas and potassium bromide react to form ________________________
Type of reaction: _________________________
Equation:

45. Silver nitrate and sodium chloride react to form __________________________
Type of reaction: _________________________
Equation:

Find the mass in one mole of:
46. Hg2(SO3)

47. Al2O3

48. Ca(MnO4)2

How many moles are in the following:
49. 98g of H2SO4

50. 7g of N2

51. 0.051g of NH3
Find the volumes of the following:
52. 1 mole of oxygen gas

53. 3.5 moles water

54. 10.0 moles of nitrogen gas

Consider the following equation:
2 Ca + O2 (g) ? 2 CaO
55. How many moles of CaO would be produced by 3 moles of Ca?

56. How many grams of CaO would be produced by 54.3 grams of oxygen gas?

57. How many liters of oxygen gas would be needed to produce 23.7 grams of CaO?

Consider the following equation:
Zn + 2 HCl (aq) ? H2(g) + ZnCl2
58. How many grams of Zn are needed to produce 11.2L of hydrogen gas?

Complete the following word problems.
59. A gas at STP occupies 4L, if the pressure was lowered to 560mmHg what would the new volume be?

60. The pressure exerted by a confined gas at 250K is 600 mmHg. What pressure would be exerted at 750K?

61. A gas at 4 atm and 350K occupies a volume of 52.3cm3, what is the new volume if we bring everything to STP?

62. How many grams of oxygen gas are present if it occupies 2.62L at 285°C and 3.42 atm?

63. We need to inflate a ballon to a volume of 1.250L with 0.2494g of helium, if the pressure is 1.26atm what temperature do we need (in °C)?

64. What is the molarity of a glucose solution if the is 0.20 mol of glucose dissolved in 750ml of water?
65. What is the molarity of hydrochloric acid if there are 25.3g of HCl dissolved in 5.00L of water?

66. What is the molality of a solution that is composed of 60.4g of potassium permanganate in 1200g of water?

67. What is the molality of a solution if there is 1.68 mol of KOH dissolved in 3.00kg of water?

Consider the following equation:
HNO3 (aq) + H2O (l) ? H3O+ (aq) + NO3- (aq)
68. Identify the two conjugate pairs.
Pair 1: acid-______________ and base-______________
Pair 2: acid-______________ and base-______________

69. Which of the acids above fit the Arrhenius definition of an acid? _____________

70. Calculate the hydroxide ion concentration of a solution whose hydronium ion concentration is 0.0010M.

71. What is the pH of a solution if the concentration of hydronium ions is
1.0 x 10-2M? Is the solution acidic or basic?

72. What is the pH of a solution if the hydroxide ion concentration is 1.0 x 108M?
Is the solution acidic or basic?

For the following questions use your knowledge of the periodic table.
73. Which of the following have the strongest metallic characteristics?
a. francium b. fluorine c. magnesium d. hydrogen

74. Which of the following has the highest ionization energy?
a. calcium b. neon c. carbon d. oxygen

75. Which of the following will have the strongest ionic bonds?
a. F2 b. NaCl c. H2O d. CH4

76. Which of the following will create a non-polar covalent bond?
a. O2 b. CaF2 c. H2O d. NH3

77. Which of the following will have the smallest atomic radius?
a. Na b. Cu c. Ne d. Cs

78. How many valence electrons does a neutral atom of Zinc have?
a. 2 b. 4 c. 8 d. 12

79. How many energy levels does an atom of beryllium have?
a. 1 b. 2 c. 3 d. 4