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chemistry

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4 FeO(s) + O2(g) ¨ 2 Fe2O3(s)

calculate value of delta H
i have done this
4(-272.0)+0->2(-825.5)
and the products minus reactants and i got -563 but it is not right?!

  • chemistry -

    My table says Fe2O3(s) = -824.2 kJ/mol which gives -560.4 kJ for the reaction.

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