Question

1) Airconditioners operate on the same principle asrefrigerators.Consider an air conditioner that has 7.00 kg ofrefrigerantflowing through its circuit each cycle. The refrigerantenters theevaporator coils in phase equilibrium, with 54.0 % of itsmassas liquid and the rest as vapor. It flows through theevaporator ata constant pressure and when it reaches the compressor95 % ofits mass is vapor. In each cycle, how much heatQ_c isabsorbed by the refrigerant while it is in theevaporator? The heatvaporization of the refrigerantis1.50×10⁵ J/kg.

Express your answer numericallyinjoules.

2) In each cycle, the change ininternalenergy of the refrigerant when it leaves the compresseris1.20×10⁵ J. What is the work W done by themotor of thecompressor?

Express your answer injoule