When Carlos opens his freezer, frozen water on the surface of a frozen steak into water vapor. The water vapor on the cold surface of a freezer and creates frost.

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 ?