One mole of an ideal gas is comlpressed from 5 L to 2 L at constant temperature. The change in entropy, in $\mathrm{JK}^{-1}$, of the gas is ____ .$\left(\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{mol}^{-1}\right)$
Answer
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