## Winter Midterm 2015 Q4,5 D

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Eugenia Kwon 3O
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### Winter Midterm 2015 Q4,5 D

I noticed that there is a three step calculation for the entropy - I understand why the first and second steps are there, but why is it necessary to include the third step in which the temperature goes back to room temperature?

Chem_Mod
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### Re: Winter Midterm 2015 Q4,5 D

Because the question asks delta S vapor at room temperature.