Question: The specific heat capacity of water is 4190 J/kg K, its heat of melting is 3.33 x 10^5 J/kg, and its heat of vaporization is 22.6 x 10^5 J/kg. For 1 kg of water, which of the following requires the most thermal energy input?
a. Melting 1 kg of ice at 0 degrees C.
b. Heating 1 kg of water from the melting point to the boiling point.
c. Converting 1 kg of water to steam, at 100 degrees C.