Reaction...?

How much energy will 5455 g of a substance release when it condenses? Assume that the heat of vaporization of the substance is 16.0 kJ/mol and that its molar mass is 36.1 g/mol.

Answer:
No of mols of substance = 5455/36.1

heat released in condensation of 1 mol = 16 kJ
heat released in condensation of 5455/36.1 mols =5455x16/36.1 kJ
=2417.728 kJ
(5455/36.1)*16 kJ = 2417.73 kJ

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