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A mixture contains Al2O3(s) [MW = 101.96 g/mol and Fe2O2(s) [MW=159.69 g/mol] and weighs 1.9834g. When heated under excess hydrogen gas, the iron oxide reacts to form water vapor and Fe(s) but aluminum oxide remains unreacted. If the residue following heating weighs 1.6446g determine the wight percent of iron oxide in the original mixture.

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