Assertion: standard heat | /r/DefinedAs | the amount of heat
Facets:
value: at one atmosphere pressure
type: LOCATION
Source sentences:
text: The standard heat of formation is defined as the amount of heat absorbed or evolved at 25° C (77° F ) and at one atmosphere pressure when one mole of a compound is formed from its constituent elements, each substance being in its normal physical state (gas, liquid, or solid).