Compute the heat, change in internal energy, and work for the cycle of two moles of a hypothetical ideal gas taken around the cycle ABCA where: Process AB is isochoric, BC is isobaric, and CA is isothermal. Show the solution. Given: Cv = 20.8 J/mol K State Pressure Volume Temperature A 5 x 105 Pa 6.6*­10-3 m3 198 K B 3 x 105 Pa 6.6*­10-3 m3 119 K C 3 x 105 Pa 11 x 10-3 m3 198 K Answer Keys: Q = -365.8 J ∆U = 0 for a cycle W = -365.8 J

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