68. The mixture of magnesium and iron was treated with

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68. The mixture of magnesium and iron was treated with concentrated sulfuric acid and collected gas volume of 1.68 l (n. Y.). The insoluble residue was separated and treated with dilute nitric acid, and the residue was completely dissolved. The resulting solution was carefully evaporated salt calcined. The weight of the solid residue was ´12 Determine the proportion of metals in the mixture.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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