Please show all steps and try to always begin every problem with the system balance equation (for example: Ein - Eout = ?U). The necessary tables are included in the links below...

2) Refrigerant 134a is contained in a constant volume tank as a saturated vapor. When it is heated, the refrigerant pressure and temperature become 500 kPa and 70C, respectively. Determine the initial pressure of the refrigerant in the tank, and the heat transfer to the refrigerant. A rigid tank, initiallyr containing 1 kg of water vapor at 2 MPa and 300C, is left to come to thermal equilibrium with its surrounding ambient at 25C. Find the volume of the tank, the final state of water in the tank, the final pressure inside the tank, and the total heat transfer from the tank. A cvlinderpiston arrangement contains 1 lbm of water at 120F and quality of 0.7. The piston is fixed in place and can not move. Heat transfer to water results in it reaching the saturated vapor state. Find (a) the initial volume, (b) final pressure, (c) final temperature, and (d) heat transfer to water