The gas in a cylinder is at a volume of 3.00 L at 25°C. A warning on the can tells the user not to store the can in a place where the temperature will exceed 52°C. What would the gas volume want to be at 52°C?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?