For, Iron(III) oxide, iron is Fe while the (III) stands for the charge, Fe3+. Oxide is known to be O2-
Since this is an ionic molecule, we just have to make the charges of the ions add up to zero. The 2 from Oxygen will come down to Fe, and 3 from Fe will come down to Oxygen.
Write the chemical equation for the reaction:
Solid iron(III) oxide reacts with carbon monoxide gas to form solid iron and carbon dioxide gas.
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