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Posted by on Monday, July 21, 2008 at 2:28pm.

Ethane, C2H6 has a molar heat of vaporization of 15 kj/moles. How many kilojoules of energy are required to vaporize 5 grams of Ethane?

  • Chemistry - , Monday, July 21, 2008 at 2:48pm

    Calculate the number of grams in a mole of C2H6, using the chemical formula and the atomic masses of C and H. It will be close to 30 g/mol.

    5 g would then be about 5/30 = 1/6 mole.

    Multiply the number of moles by the molar heat of vaporization, 15 kJ/mol, for the answer.

  • Chemistry - , Sunday, April 26, 2009 at 12:18pm

    2.5

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