If \Delta {H}{vap }^{\circ} for {H}{2} {O} is 44 {kJ} {mol}^{ 1}, then amount of heat required to evaporate 9 {~g} of {H}_{2} {O} is : 10.10: Enthalpy of Fusion and Enthalpy of Vaporization Chemistry LibreTexts Delta Extrax HXY11 THC + D10 + THC H Live Resin 3ml Disposable Vape Pen Calm Leaf Delta Extrax Diamond Heights Disposable 3G D8 Gas phase changes.svg Delta_{vap}H^ for water is +40.49 kJ moi^ 1 at 1 bar and 100C . Change in internal energy for this vaporization under same condition is Sarthaks eConnect Largest Online Education Community