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10 cards from this deck
100.0extkPa100.0 ext{ kPa}100.0extkPa
1extmolL−11 ext{ mol L}^{-1}1extmolL−1
Enthalpy change forming 1 mole from elements in std states
Always exactly one mole
Zero (0)
°°° (superscript degree symbol)
sumDeltaHf°sum Delta H_f°sumDeltaHf°(products) −sumDeltaHf°- sum Delta H_f°−sumDeltaHf°(reactants)
−285-285−285
To form exactly one mole of the compound
Same compound has different DeltaHf°Delta H_f°DeltaHf° in different states
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