A 0.015 m rigid tank initially contains refrigerant R-134a at 0.4 MPa and 100 percent quality. Then tank is connected by a valve to a supply line that carries R-134a at 1 MPa and 26 C. The valve is now opened, allowing the refrigerant to enter the tank, and is closed when it is observed that the tank contains only saturated liquid at 0.7 MPa. Determine: (a) The mass of the refrigerant entered the tank. (4 pts) (b) The amount of heat transferred to the surroundings, which is at 20 C. (4 pts) (c) The entropy generated during this process. (6 pts)