Two cylinders of oxygen are connected to each other by a valve.The first tank is 50 liters in volume and contains oxygen at 27 °Cand a pressure of 140.37 kPa, and the corresponding values for theother tank are 30 liters, 89 °C and 62.73 kPa. If the valveconnecting the tanks is opened and the tanks are allowed to reachsome equilibrium condition with the temperature being 50 °C. Answerthe following: (a) the equilibrium pressure, (b) the heat transferbetween both tanks and the surroundings and the direction of theheat transfer, and (c) the internal energy in the final state ifthe tanks were insulated.
