en un Crisol el refractorio se obtiene una mezcla de 7.45 gramos de óxido de hierro y 0.11 moles de aluminio .se colocan en Una mufla donde tiene lugar de reducción del ácido: 3FeO + 2Al- 3Fe + Al2O3 Cuál es la masa de reacción de exceso que queda en El Crisol​

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .