Practice Problems
1. The inflated balloon that slipped from the hand of Renn has a volume of 0.50 L at sea level (1.0
atm) and it reached a height of approximately 8 km where the atmospheric pressure is
approximately 0.33 atm. Assuming that the temperature is constant, compute for the final
volume of the balloon.
2. 4.40 L of gas is collected at 50.0°C. What will be its volume upon cooling to 25.0°C?
3. In a rigid container a gas has a pressure of 1.3 atm at 25°C. What is the pressure of the gas if it is
heated to 45°C?
4. A gas occupies 2.0 L at 2.5 atm and 25ºC. What is it’s volume if the temperature is increased to
33ºC and the pressure is decreased to 1.5 atm?
5. A gas occupies 4.5 L at 1.3 atm and 35ºC. What is the final temperature if the final volume of the
gas is 3.2 L with a pressure of 1.5 atm?
6. At 1.80 atm of pressure and 30.0 °C temperature, a gas occupies a volume of 65.5 mL. What will
be the volume of the same gas at STP?
7. Oxygen gas inside a 1.5L-gas tank has a pressure of 0.95 atm. Provided that the temperature
remains constant, how much pressure is needed to reduce its volume by ½?
8. A scuba diver needs a diving tank in order to provide breathing gas while he is underwater. How
much pressure is needed for 6.00 liters of gas at 1.01 atm to be compressed in a 3.00L cylinder?
9. A sample of fluorine gas occupies a volume of 600 ml at 760 torr. Given that the temperature
remains the same, calculate the pressure required to reduce its volume by 1/3.
10. Calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L