How much heat is released when 105 grams of steam at 100.0 degrees celsius is cooled to ice at -15.0 degrees celsius? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity pf liquid water is 75.4 J/(mol x degrees Celsius) and the molar heat capacity of ice is 36.4 J/(mol x degrees celsius).