a rigid storage tank has a total volume of 5 and is sealed throughout the process.Initially,the storage tank contains 0.5m of saturated liquid water at P = 0.5MPa,while the rest of the tank is filled with saturated liquid water at P=0.5MPa,while the rest of the tank is filled with saturated steam at the same pressure.The tank gradually cools until the liquid-vapor system is at P=0.4MPa.How much heat was lost to the surroundings during this process,and what are the final volumes of liquid and vapor