Assertion: standard enthalpy | /r/HasProperty | evolved for 1 mole of a substance
Facets:
value: to change states
type: PURPOSE
Source sentences:
text: The standard enthalpy of fusion (symbol: ΔHfus), also known as the heat of fusion or specific melting heat, is the amount of thermal energy which must be absorbed or evolved for 1 mole of a substance to change states from a solid to a liquid or vice versa.