Steam at 8MPa and 350C is contained in a piston cylinder device, which is held in place by a load. The piston cylinder is immersed in a constanttemperature bath at 350C (Figure Q1). The initial volume of the steam is 0.2 m3. The load is removed, and the steam expands by lifting the piston. When equilibrium is reached the pressure of the steam is 4MPa. Figure Q1 a) Find the changes in internal energy and enthalpy of the steam. b) Calculate the work and heat involved in the process