Predicting the Enthalpy of Vaporization and Calculating the Entropy of Vaporization of 87 Octane Gasoline Using Vapor Pressure Correct relationship between heat of fusion `(DeltaH_(fus))`, heat of vaporization `(DeltaH_("vap"))` and heat of sublimation `(DeltaH_("sub"))` is Standard Enthalpy of Formation, \(\Delta H_{\rm f}^\circ \) when do we use this two equation? is there a specific condition on when to use them ? : r ChemicalEngineering Enthalpy Changes delta h Nuclear Power
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delta vap h 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 :