0.6113 g sample of Dow metal, containing aluminum, magnesium, and other metals, was dissolved and treated to prevent interferences by the other metals. The aluminum and magnesium were precipitated with 8- hydroxyquinoline. After filtering and drying, the mixture of Al(C9H6NO)3 and Mg(C9H6NO)2 was found to weight 7.8154 g. The mixture of dried precipitates was then ignited, converting the precipitate to a mixture of Al2O3 and MgO. The weight of this mixed solid was found to be 1.0022 g. Calculate the %w/w Al and %w/w Mg in the alloy.

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A 0.6113 g sample of Dow metal, containing aluminum, magnesium, and
other metals, was dissolved and treated to prevent interferences by the other
metals. The aluminum and magnesium were precipitated with 8-
hydroxyquinoline. After filtering and drying, the mixture of Al(C9H6NO)3 and
Mg(C9H6NO)2 was found to weight 7.8154 g. The mixture of dried precipitates
was then ignited, converting the precipitate to a mixture of Al2O3 and MgO.
The weight of this mixed solid was found to be 1.0022 g. Calculate the %w/w
Al and %w/w Mg in the alloy.

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