2. Ten ft of helium at 20 psia and 80 °F are compressed isentropically 1-2 to 80 psia. The helium is then expanded polytropically 2-3 with n = 14.35 to the initial temperature. An Isothermal 3-1...

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Extracted text: 2. Ten ft of helium at 20 psia and 80 °F are compressed isentropically 1-2 to 80 psia. The helium is then expanded polytropically 2-3 with n = 14.35 to the initial temperature. An Isothermal 3-1 retuns the helium to the initials state. Find T2, V2, P3Qa, Qr, W,AS(3-1) and pm