Question: P 7.3 P 7.4 Consider a piston-cylinder assembly that contains 1 mole of ideal gas, A, with cv = R. The system is well insulated.

P 7.3 P 7.4 Consider a piston-cylinder assembly that contains 1

P 7.3

mole of ideal gas, A, with cv = R. The system is

P 7.4

Consider a piston-cylinder assembly that contains 1 mole of ideal gas, A, with cv = R. The system is well insulated. Its initial volume is 10 L and initial pressure, 2 bar. The gas is allowed to expand against a constant external pressure of 1 bar until it reaches mechanical equilibrium. (a) Is this a reversible process? (b) What is the final temperature of the system? (C) How much work was obtained? (d) Calculate the change of the entropy of the universe. (a) For the well-insulated piston-cylinder assembly containing 1 mole of ideal gas described in the former assignment 07-3, describe the process by which you can obtain the maximum work from the system. (b) Calculate the value for the work. (c) What is the final temperature? (d) Why is T lower than that calculated in the former assignment 07-3? (e) Calculate the change of the entropy of the universe

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