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[fredcheg89]

Problem: "Find the change in specific internal energy predicted by the Redlich-Kwong Equation of state for methyl chloride for an initial state Po=70 bar, To=460K, and a final state of Pf=50 bar and Tf=450k."

I used the Redlich-Kwong equation to find Vo and Vf, but am not sure what equation to use to find a delta U or dU at each condition. There are no constant parameters to use iso-process equations.