The graph in Figure 1.1 shows one mole of monoatomic gas at initial temperature of 40 ˚C and volume 2 L expanding isobarically at a constant pressure of 2.5 × 105 Pa to 5 L. It is then cooled down at constant volume to a pressure of 1.2 × 105 Pa. The gas is finally compressed isothermally back to its initial state. Calculate i. the work done in process AB. ii. the amount of heat absorbed from A to B iii. the work done by the gas from C to A.

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