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Posted by on Thursday, November 4, 2010 at 10:01pm.

Propane gas is used to heat a tank of water. If the tank contains 200 L of water, what mass of propane will be required to raise its temperature from 20 degrees C to 65 degrees C. The heat of combustion for propane is -2220 kJ/mol.

  • chemistry - , Thursday, November 4, 2010 at 10:07pm

    How much heat do you need?
    q = mass x specific heat water x (Tfinal-Tinitial).

    2220 kJ/mol propane x ymols = q
    Solve for y moles.
    Then y moles propane x molar mass propane = grams propane.
    Check my thinking.

  • chemistry - , Monday, December 7, 2015 at 10:03pm

    747.9

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