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JEE Main 2024 (Online) 8th April Evening Shift

INTEGER+4 / -12024

\(\Delta_{\text {vap }} \mathrm{H}^{\ominus}\) for water is \(+40.79 \mathrm{~kJ} \mathrm{~mol}^{-1}\) at 1 bar and \(100^{\circ} \mathrm{C}\). Change in internal energy for this vapourisation under same condition is ________ \(\mathrm{kJ} \mathrm{~mol}^{-1}\). (Integer answer) (Given \(\mathrm{R}=8.3 \mathrm{~JK}^{-1} \mathrm{~mol}^{-1}\))

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