A scientist measures the standard enthalpy change for the following reaction to be - 770.6 kJ: 2NO(g) + 2H₂(g) → N₂(g) + 2H₂O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H₂O(1) is kJ/mol. Substance AH (kJ/mol) NO(g) H₂(g) N₂(g) 90.3 0.0 0.0

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