Vapor Pressure Springer Nature Link Standard enthalpy of vapourisation `Delta_("vap")H^( )` for water at `100^@C` is `40.66 kJ mol^( 1)`. The internal energy of vapourisation of water at `100^@C` (in kJ `mol^( 1)`) is (Assume water vapour to behave like Delta Extrax THCA + Delta 9P Disposable Thor's Hammer 4.5g Lord Vaper Pens Delta H Vap Water Delta 8 1000mg Disposable Trainwreck Hemplitude Delta Vap H Delta 8 THC Disposable Vape 10.10: Enthalpy of Fusion and Enthalpy of Vaporization Chemistry LibreTexts