How would the volume of helium in a balloon be affected if the balloon was placed in a room where air temperature is lower?


If the absolute temperature of a sample of gas in a glass jar is decreased by a factor of two, how would the pressure of the gas be affected?


If you doubled the volume of a sample of gas and then doubled the volume again without changing its pressure, how would the absolute temperature of the gas be affected?


What pressure must be applied to keep a gas at 750 torr and 300 K at a constant volume of 200 mL if the temperature is raised to 450 K?