What information about water is needed to calculate the enthalpy change for converting 1 mol H2O(g) at 100 °C to H2O(l) at 80 °C? (a) Heat of fusion, (b) heat of vaporization, (c) heat of vaporization and specific heat of H2O(g), (d) heat of vaporization and specific heat of H2O(l), (e) heat of fusion and specific heat of H2O(l).