Ir. Ramandeep is doing inspection in Ulu Jong Power Station (UJPS). He encounters a piston cylinder assembly on level 2 of the station. which contains air at a pressure of 1 bar and a temperature of 15⁰ C, with a volume of 0.02 m³. He found that the air is first heated at constant volume until the pressure is 4.2 bar before being cooled at constant pressure to the initial temperature. Assist Ir. Ramandeep to determine the net heat flow, Q, and entropy change, S of the air.