3)A diatomic gas does 80J of work when expanded isobarically. The heat given to the gas during this process is ?? W = PdV = nRdt 80 = ndTR ndT = 9.62 dQ = dU +dW nCpdT = nCvdt + dW = (ndT)20.785 + 80 ................ using Cv=fR/2 = 9.62*20.785 + 80 = 279.95J
i hope its right
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