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A horizontal piston-cylinder assembly contains 0.25 kg of an ideal gas (M=28.97 kg/kmol) of constant heat capacity (Cp=1 kj/kg*k and Cv=0.72 kj/kg*k) The gas undergoes a constant-pressure expansion at 2 bar from V1=0.1 m^3 , T1=278 K to V2=0.12 m^3, T2=334 K while heat is slowly added.

a) How much heat is transferred during this process?

b) What is the entropy change of the gas?

c) Sketch p-V diagram.

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