Solve the following complex circuit, showing all work. Mark your Currents, Voltages and Resistances by the number on the Resistor they belong to. (Ex: Current through R1 is I1, and Voltage for R1 is V1)

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.