Find P, T, v, u, h, and x and indicate states in P- v and T- v diagrams for: Water at 5000 kPa, u=1000 kJ/kg b. R-134a at 20 °C, u=300 kJ/kg c. Nitrogen at 250K, 200 kPa d. Carbon dioxide at 20 °C, 2 MPa