Fall 2018 Exam 1 1. d 9. a 2. c 10. a 3. c 11. b 4. e 12. d 5. e 13. d 6. b 14. a 7. b 15. e 8. b.

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Fall 2018 Exam 1 1. d 9. a 2. c 10. a 3. c 11. b 4. e 12. d 5. e 13. d 6. b 14. a 7. b 15. e 8. b

Fall 2018 Exam 1 16. Set 1: Choice A has greater mass. Choice A: 128 g oxygen gas Choice B: 96.0 g ozone gas Set 2: Choice B has greater mass. Choice A: 0.12 g He Choice B: 0.65 g He Set 3: Choice B contains more oxygen. Choice A: SrO is 15.5% oxygen by mass. Choice B: Na2O is 25.8% oxygen by mass.

Fall 2018 Exam 1 Increase, decrease, or constant? Pressure of argon in chamber Decrease Volume of argon in chamber Constant Temperature of argon in chamber Moles of argon in chamber decrease 17. a. Fewer particles are present in the container which is at a constant volume and temperature. Therefore, there are fewer particles to collide with the container walls, which results in a lower force exerted on the walls of the chamber by the argon. This means that the pressure has decreased.

Fall 2018 Exam 1 Increase, decrease, or constant? Pressure inside ballon Decrease Temperature inside balloon Constant Moles of nitrogen inside balloon Volume of the balloon increase 17. b. The balloon is at constant temperature and volume. Because the pressure outside the balloon has decreased due to fewer particle collisions outside the balloon, the balloon expands until the internal and external pressure are the same.

Fall 2018 Exam 1