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1. Chapters1-3 Chapters4-5 Chapters 7-8 Chapter 9 Chapter 10 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

2. What is the percent yield of the reaction if 9.9g 2Pb(No3)2 are heated to giver 5.5g of PbO? 2Pb(NO3)2(s)  @PbO(s) + O2(g) A) 44% B) 56% C)67% D)82%

3. What is 82 %

4. 12.7g Cu produced 38.1 g Ag. What is the percent yield of sliver in this reaction? Cu+2AgNO3Cu(NO3)+ 2Ag A)56.7% B)77.3% C)88.2% D)176%

5. What is 88.2%

6. According to the kinetic theory, collisions between molecules in a gas ____. A) are perfectly elastic B) are inelastic C) never occur D) cause a loss of total kinetic energy

7. What is Perfectly Elastic

8. Which of the following statements is part of the kinetic theory? The particles of a gas move independently of each other. The particles in a gas move rapidly. The particles in a gas are relatively far apart. all of the above

9. What is all of the above.

10. Which of the following statement is not true, according to the kinetic theory? There is not attraction between particles of gas. Only particles of matter in the gaseous state are in constant motion The particles of a gas collide wit each other and with other objects All of the statements are true

11. What is Only particles of matter in the gaseous state are in constant motion.

12. What instrument is normally used to measure atmospheric pressure? A) Thermometer B) Barometer C) Vacuum D) Manometer

13. What is a Barometer

14. What is the SI unit of pressure? A) candela B) mole C) pascal D) Newton

15. What is Pascal

16. Standard conditions when working with gases are defined as __? 0 K and 101.3 kPa 0 K and 1 kPa 0 C and 101.3 kPa 0 C and 1 kPa

17. What is 0 K and 101.3 kPa

18. What causes gas pressure in a container such as a helium balloon? The walls of the container The vacuum maintained in the container The simultaneous collisions of fast-moving particles in the container Atmospheric pressure acting on the outside walls of the container

19. What is the simultaneous collisions of fast-moving particles in the container

20. With which temperature scale is temperature directly proportional to average kinetic energy? Celsius Fahrenheit Kelvin Centigrade

21. What is kevlin

22. How is the ideal gas law usually written? PV= R nT B) PV = nR T C) PV = nRT D) P = nRT V

23. What is PV= nRT

24. Which law can be used to calculate the number of moles of a contained gas? Boyles law combined gas law ideal gas law Charles law

25. What is ideal gas law

26. What happens to the partial pressure of oxygen in a sample of air if the temperature is increased? It increases It stays the same It decrease. the change cannot be determined

27. What is it stays the same

28. Which of the following gases will effuse the most rapidly? A) bromine B) chlorine C) ammonia D) hydrogen

29. What is hydrogen

30. Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy ? A) bromine B) chlorine C) ammonia D) hydrogen

31. What is ammonia

32. Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time? Argon Oxygen Hydrogen Neon

33. What is oxygen

34. What causes waters low vapor pressure? A) dispersion forces B) covalent bonding C) hydrogen bonding D) ionic attractions

35. What is hydrogen bonding

36. What is the shape of the water molecule? A) liner B) tetrahedral C) trigonal planer D) bent

37. What is bent.

38. Which of the following is primarily responsible for holding water molecules together in the liquid states. Dispersion forces Hydrogen bonds Ionic bonds Polar covalent bonds

39. What is hydrogen bonds

40. Surface tension is ___? Is the inward force which tends to minimize the surface area of liquid may be increased by detergents Is decreased by hydrogen bonding causes beads of water to spread out.

41. What is the inward force which tends to minimize the surface area of liquid

42. The fact that ice is less dense than water is related to the fact that ___? A) the molecular structure of ice is much less orderly than that of waterB) the molecules of ice are held to each other by covalent bonding C) ice has a molecular structure in which water molecules are arranged randomly D) ice has a molecular structure that is an open framework held together by hydrogen bonds

43. What is the molecular structure of ice is much less orderly than that of water

44. What is the number of Kg of solvent in a molar solution containing 5.0 grams of solute? (Molar mass = 30g) 0.24k 2.4k 0.11k 1.1k

45. What is 0.24k

46. To which of the following variables is change in a boiling point directly proportional? Morality of solution molality of solution percent by volume of solution percent (mass/mass) of solution

47. What is percent volume of solution

48. What is the freezing point of a solution of 0.5 mol of LiBr in 500 mL of water? (Kf=1.86 C/m) -1.86 C -3.72 C -5.58 C -7.44 C

49. What is – 1.86 C

50. What is the molality of a solution of water and KCL if the freezing point of the solution is -3 C? (Kf=1.86 C/m; molar mass of water =18 g) 0.6m 1.2m 0.8m 6m