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d2P/dV2 = 2RT(V - b)-3 + a[(2*sqrt(T))*(V2sqrt(T) + Vb*sqrt(T))-2 - 2(V2*sqrt(T) + V*sqrt(T))-3*(2V*sqrt(T) + b*sqrt(T))2]

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Q: What are the first and second partial derivates of the redlich-kwong equation of state with respect to V and with constant T?
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