Consider a rigid tank of volume 0.7m3 . A tiny hole in the tank leaks in air from the surroundings to rigid tank. Take the surrounding air pressure at 1 bar and at temperature 25°C. Assume the temperature of the air inside the tank remains constant at 25°C . Find the amount of heat transfer, in kJ for the following two conditions:
(a) Initially tank is evacuated
(b) Initially contains air at 0.7 bar, 25°C,