(a) What is the enthalpy change needed to heat 3kg of water from 1MPa and 0C to steam at 0.4MPa and 250C ? (b) What is the enthalpy change needed to heat 1kg of water at 0.4MPa and 3C to steam at 250C and 0.3MPa ? (c) Calculate the H value for an isobaric change of steam from 0.8MPa and 200C to saturated liquid. (d) Repeat part (c) for an isothermal change to saturated liquid. (e) A 0.15m3 tank containing 1kg of water at 1MPa and 179.88C has how many m3 of liquid water in it? Could it contain 7kg of water under these conditions