Calculate the change in entropy when the pressure of 5.75g of helium gas is decreased from 320kPa to 40kPa while the temperature decreases from 423K to 273K. Assume idea behavior.
I know that you should use two equations: deltaS=nRln(P1/P2) and deltaS=nCvln(T2/T1).
Why would you use Cv and how would you find it in the second equation? After finding deltaS for both equations, do you add the two values together or subtract them?
Calculating Entropy with Change in Temperature
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Alana Sur 3B
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Re: Calculating Entropy with Change in Temperature
we use Cv to calculate the heat capacity of an ideal gas with constant volume. You add the two delta S values
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