A frictionless, thermally conducting piston separates the air and water in the cylinder shown in Fig. P5.100, the initial volumes of A and B are each 500 L, and the initial pressure on each side is 700 kPa. The volume of the liquid in B is 2% of the volume of B at this state. Heat is transferred to both A and B until all the liquid in B evaporates. Notice that PA = PB and TA = TB = Tsat through the process and iterate to find final pressure and then determine the heat transfer.