A compressor receives 0.1 kg/s R-134a at 150 kPa, -10C and delivers it at 1000 kPa, 40C. The power input is measured to be 3 kW. The compressor has heat transfer to air at 100 kPa coming in at 20C and leaving at 30C (i.e. like a heat exchanger). What is the mass flow rate of air?