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Un polvo contiene FeSO47H2O (masa molar = 278,01 g/mol) entre otros componentes. Una muestra de 3,035 g del polvo se disolvi en HNO3 y se

Un polvo contiene FeSO47H2O (masa molar = 278,01 g/mol) entre otros componentes. Una muestra de 3,035 g del polvo se disolvi en HNO3 y se calent para convertir todo el hierro en Fe3. La adicin de NH3 precipit Fe2O3xH2O que posteriormente se encendi para producir 0,300 g de Fe2O3. Cul era la masa de FeSO47H2O en la muestra de 3,035 g?

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