A piston-cylinder arrangement initially contains water at P = 300 psia and T = 500 oF. The piston is moved to a final position where the volume is twice the initial volume. During the piston movement there is a heat transfer to the water in such a way that the pressure in the cylinder remains constant. (a) Find the work done per pound of water during the expansion. (b) Find the heat transfer per pound of water during the expansion. (c) Find the value of the enthalpy of the water after expansion.