Arefrigerator uses refrigerant-134a as the working fluid and operates on the ideal vaporcompression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 30 percent and leaves the compressor at 60°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator.