2. Ten kilograms of R-134a fill a 1.595-m weighted piston-cylinder device at a temperature of -26.4C. The container is now heated until the temperature is 100C. Determine the final volume of the R-134a. R-134a - 26.4C 10 kg 1.595 m 3. 4. 10 kg of R-134a fill a 1.348-m rigid container at an initial temperature of -40C. The container is then heated until the pressure is 200 kPa. Determine the final temperature and initial pressure. A rigid tank with a volume of 1.8 m contains 15 kg of saturated liquid-vapor mixture of water at 90C. Now the water is slowly heated. Determine the temperature at which the liquid in the tank is completely vaporized. Also, show the process on a T-v diagram with respect to saturation lines. Superheated water vapor at 1.4 MPa and 250C is allowed to cool at constant volume until the temperature drops to 120. At the final state, determine (a) the pressure, (b) the quality, and (c) the enthalpy. Also, show the process on a T-v diagram with respect to saturation lines. 5. 6. A piston-cylinder device initially contains 1.4-kg saturated liquid water at 200C. Now heat is transferred to the water until the volume quadruples and the cylinder contains saturated vapor only. Determine (a) the volume of the tank, (b) the final temperature and pressure and (c) the internal energy change of the water