A tank is divided into compartments A and B using a separator partition. Compartment A contains water at 3 kg, 5 MPa and 200C conditions. In compartment B, there is 1 kg of water at 200C and 0.1 MPa conditions. By removing the separator, the water in the two chambers is mixed. At the end of mixing process, since the final temperature is 200C, calculate the final pressure and the final internal energy of the system.