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heat capacity at constant pressure Cp=(dH/dT) the difference between H(enthalpy) and U(internal energy) is PdV=RT(in perfect...

heat capacity at constant pressure
Cp=(dH/dT)
the difference between H(enthalpy) and U(internal energy) is PdV=RT(in perfect gas)

Then, in real gas, how can I know the difference?

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