1. A balloon is inflated to a volume of 2.5 L in an airplane where the pressure is 0.60 atm. What will be the volume of the balloon on returning to sea level, where the pressure is 1.0 atm?

2. A balloon is inflated at 25C to a volume of 2.5 L and then immersed in liquid nitrogen at a temperature of 77 K. What will be the final volume of the balloon? (Note: If you actually try this experiment, the final volume of the balloon will probably be smaller because some of the gases within the balloon will condense. However, the experiment does work, and if undisturbed, the

balloon will return to its original volume on warming.)

3. A cylinder with a movable piston has an initial volume of 0.4 L at a pressure of 7.0102 torr and temperature of 40C . What will be its volume if the pressure changes to 2.0102 torr and the temperature changes to 80C ?