1. The problem statement, all variables and given/known data A vessel of 1m^3 volume is half filled with water. The pressure inside the vessel is 2bar. Steam tables are given 2. Relevant equations How much heat is needed to completely evaporate the water? 3. The attempt at a solution I can find the final enthalpy by finding h(g) at 2 bar. But how do you find the initial enthalpy?