2. Atoms, Molecules and Moles   Previous PageNext Page
     Gas Molecules And Absolute Zero


Example.
A hot-air balloon heated by a propane burner has a volume of 500,000 liters when the air inside is heated to 75. What will the volume be after the air has cooled to 25, if the pressure remains constant?

Solution. The first step is to convert temperature from centigrade to absolute:

T = 75 + 273 = 348K
T = 25 + 273 = 298K

Then we can use Charles' law:



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