A closed, rigid tank contains a two-phase liquid-vapor mixture of Refrigerant-22 initially at −18°C with a quality of 50.9%. Energy transfer by heat into the tank occurs until the refrigerant has become purely a saturated vapor. What is the final temperature, in [°C]? (2°C) What is the net amount of heat per unit mass of refrigerant to/from the tank, in [kJ/kg]? (103 kJ/kg)