1. as the temperature of the gas in a balloon decreases, which of the following occurs? the volume of the balloon increases. *** the average kinetic energy of the gas decreases. the gas pressure inside the balloon increases. all of the above 2. if a sealed syringe is heated, in which direction will the syringe plunger move? out in the plunger will not move. the direction cannot be predicted. 3. if a balloon containing 3000 l of gas at 39°c and 99 kpa rises to an altitude where the pressure is 45.5 kpa and the temperature is 16° c, the volume of the balloon under these new conditions would be calculated using the following conversion factor ratios:

chemb.01.08.3a
chemb.01.08.3b
chemb.01.08.3c
chemb.01.08.3d

4. 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 decreases.
the change cannot be determined.

5. a breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. what is the partial pressure of oxygen at 101.4 kpa if phe = 82.5 kpa andchemb.01.08.06= 0.4 kpa?

82.9 kpa
19.3 kpa
18.5 kpa
101.0 kpa

6. 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