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AH 6. Is the following expression Assur T Always true never true only true at T-TC only true at TT 7. Challenge problem - Calculate the entropy of vaporization of water at 75 C, knowing that its entropy of vaporization at 100 C is 109.0J/K mol, and the molar heat capacity at constant pressure of liquid and gas water are, respectively, 75.3 J/K mol and 33.6J/K mol, in this temperature range. (Recall: entropy is a state function! - AS = cin