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Q1. In a non-flow process a gas initially expands from 10 bar, 0.005 m³ and 400 K to 3.75 bar and 0.009 m³ according to the law PV^γ = C. Then the gas expands polytropically to 0.024 m³, 1 bar and 192 K.

Calculate EACH of the following:

(a) the mass of the gas;(3)

(b) the temperature after the initial expansion;(2)

(c) the total work;(5)

(d) the total heat transfer if the change in internal energy in the polytypic process is – 1452.32 J;(3)

(e) the total change in entropy. (3)

Note: g = 1.67, n = 1.35, c_v = 443.18J/kg K, Molar mass = 28 kg/kmol