Assume 5 lbm of gas for which R = 26 ft-lbf/lbm-R and k = 1.10m undergo a polytropic process form P1 = 25 psia and T1 = 125 deg F to P2 = 105 psia and V2 = 5 ft3. Determine (a) n in PVn = c, (b) AH, AU, and AS, (c) PdV and -VdP, (d) W and Q.
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