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Q1. A gas with molar mass 44 kg/kmol and mass 0.0 11 kg is cooled at constant pressure of 0.115 bar from 281 K to half of its original volume.

It is then isentropically compressed according to PV^1.4 = C to half of its secondary volume.

(a) Sketch PV and Ts diagrams.

(b) Calculate the specific gas constant.

(c) Calculate the work done during the initial cooling.

(d) Calculate the heat of the initial cooling.

(e) Calculate EACH of the following:

(i) the final temperature;

(ii) the isentropic work done.

Note: R_u = 8.314kJ/kmolK and C_v = 751JlkgK