(a) Sketch a PV diagram and find the work done by the gas during the following stages. (Draw the PV diagram on paper. Your instructor may ask you to turn in this work.) A gas is expanded from a volume of 1.0 L to 2.8 L at a constant pressure of 3.0 atm.
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(b) The gas is then cooled at constant volume until the pressure falls to 1.9 atm.
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(c) The gas is then compressed at a constant pressure of 1.9 atm from a volume of 2.8 L to 1.0 L. (Note: Be careful of signs.)
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(d) The gas is heated until its pressure increases from 1.9 atm to 3.0 atm at a constant volume.
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(e) Find the net work done during the complete cycle.
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