# chem

posted by .

The standard molar heat of vaporiza-
tion for water is 40.79 kJ/mol. How
much energy would be required to vaporize
2.54 ×1010 molecules of water?

• chem -

40.79 kJ/mol x # moles = ?
mols = 2.54E10/6.02E23
40.79 kJ/mol x (2.54E10/6.02E23) = ?

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