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Isothermal expansion of a gas - change in entropy

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One-gram molecule of a gas expands isothermally to four times its volume. Calculate the change in entropy in terms of the gas constant.

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https://brainmass.com/physics/isothermals/isothermal-expansion-of-a-gas-change-in-entropy-6564

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Work done, W = integral v1 to v2 [PdV]

(Please take v1 as the lower limit and v2 as the upper limit for the ...

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