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Q1. A gas is cooled at constant volume from 0.03 m3, 3.8 bar and 600 K to 382 K. The gas is then allowed to expand polytropically to 0.054 m³, 1 bar and 283 K.

(a) Calculate EACH of the following:

(i) the pressure and mass at the beginning of the polytropic expansion; (5)

(ii) the polytropic index; (3)

(iii) the total work; (3)

(iv) the total heat. (5)

Note: C_p = 1105J/kgK C_v = 850 J/kgK