Chemistry - Thermochemistry Question with Solution | TestHub

The internal energy change (in $\mathrm{J}$) when $90 \mathrm{g}$ of water undergoes complete evaporation at $100°\mathrm{C}$ is ..............

(Given : ${\mathrm{\Delta H}}_{\mathrm{vap}}$ for water at $373 \mathrm{K}=41 \mathrm{kJ}/\mathrm{mol}$, $\mathrm{R}=8.314 {\mathrm{JK}}^{-1} {\mathrm{mol}}^{-1}$)