Using Energy Concepts and the Ideal Gas Model
Nitrogen (N2) fills a closed, rigid tank fitted with a paddle wheel, initially at 540°R, 20 lbf/in.2, and a volume of 2 ft3. The gas is stirred until its temperature is 760°R. During this process, heat transfer from the gas to its surroundings occurs in an amount 1.6 Btu. Assuming ideal gas behavior, determine the mass of the nitrogen, in lb, and the work, in Btu. Kinetic and potential energy effects can be ignored.
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