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Calculate the amount of energy (in kJ) necessary to convert 457 g of liquid water from 0°C to water vapor at 172°C. The molar heat of vaporization (Hvap) of water is 40.79 kJ/mol. The specific heat for water is 4.184 J/g • °C, and for steam is 1.99 J/g • °C. (Assume that the specific heat values do not change over the range of temperatures in the problem.)