inesto4nejsalsla0ni inesto4nejsalsla0ni

11-10-2016
Chemistry

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Why is the enthalpy of formation of oxygen zero?

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Аноним Аноним

18-10-2016

All elements in their standard states (oxygen gas, solid carbon in the form of graphite, etc.) have a standard enthalpy of formation of zero, as there is no change involved in their formation.

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