Iron(III) oxide reacts with carbon monoxide according to the equation Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.35 gg Fe2O3Fe2O3 and 15.50 gg CO Once the reaction has occurred as completely as possible, what mass of the excess reactant is left?         Express your answer in grams using three significant figures

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