If the coolant in an air conditioner has a lower temperature than the air in a building, then a. heat will flow from the air into the coolant b. heat will flow from the coolant into the air c. heat will not flow from the coolant into the air

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)