You isolate a unique elemental solid from a parallel universe. You determine that the enthalpy of fusion of this solid is H_fus = 62.3 kJ/mol, and the molar mass of this solid is 50.7 g/mol. What is the enthalpy of fusion of this solid in units of J/g?

4.67 grams of water vapor is condensed to liquid phase. What is the heat transfer (in kJ) the water experiences?

A 11.9-gram block of water ice (c_ice = 2.093 J g^-1 K^-1) raises in temperature from -19.4C to 0C. It then melts completely to water. How much heat (in kJ) is absorbed by the water in the full process?