When three moles of helium is mixed with one mole of neon at constant temperature and pressure (25°C, 1atm), the entropy of mixing (in $\mathrm{JK}^{-1}$, rounded off to two decimal places) is ____ (Given: $\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{mol}^{-1}$ )
Answer
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