Standard Chemistry - Gas Laws test

1. A balloon contains 13.3 moles of gas at 34.6oC and 754 mm Hg. What is the volume of the balloon?

2. A balloon, with a volume of 3.44 L is heated from 12oC to 450 K while the pressure is dropped from 1.66 atm to 800 mm Hg. What is the new volume?

3. A canister holds 3.22 moles of gas and has a pressure of 310 mm Hg. What will the pressure be if more gas is added until the container holds 6.97 moles of gas?

4. How many moles of gas will fit in a 4.5 L container at 339.9oC and 9.00 atm?

5. How does a vacuum cleaner work?

6. Imagine that you have a 2 liter bottle that is holding oxygen gas. If you now add hydrogen, what is the volume of the oxygen? Explain how you arrived at your answer. (In other words, why do you think you are right?)

7. Explain using KMT why adding gas to a sealed container increases the pressure.

8. Explain how a straw works.

9. Explain, using KMT why heating a balloon makes the volume go up.

10. Why do your ears hurt when you go up a mountain, and how/why does yawning (or chewing gum, etc.) help?

11. Why does pressure go up when volume drops?