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How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.90g of Fe2O3 with enough carbon monoxide to produce iron metal?

Fe2O3 + 3CO ---> 2Fe + 3CO2 dH=-24.8kJ

How do you find q (of the 2Fe in kJ).

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  1. Pure substances have heat formation (delta Hf) of zero.

    -24.8 kJ x (2.90g Fe2O3/molar mass Fe2O3) = -??
    The minus sign means heat is evolved.

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