Answer: Air contained in a rigid, insulated tank fitted

Chapter 6, Problem 6.41

(choose chapter or problem)

Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 300 K, 2 bar, and a volume of \(2 \mathrm{\ m}^{3}\), is stirred until its temperature is 500 K. Assuming the ideal gas model for the air, and ignoring kinetic and potential energy, determine (a) the final pressure, in bar, (b) the work, in kJ, and (c) the amount of entropy produced, in kJ/K. Solve using

(a) data from Table A-22.

(b) constant \(c_{v}\) read from Table A-20 at 400 K.

Compare the results of parts (a) and (b).

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