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an ideal gas is expand at a constant temperature with the pressure changing from 10 bar to 1 bar. assume Cp,m = 5/2R
calculate delta U, delta H, delta S?.

An ideal gas is expanded reversibly from initial conditions of Vi= 10 L and Ti = 25C to Vf= 100L and Tf= 150C calculate delta S?
the standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation Pb(s,25)---Pb (650 C)?.

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