29. The alloy of lead, aluminum, copper mass was dissol

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29. The alloy of lead, aluminum, copper mass was dissolved 5.44 g of a 40% solution of nitric acid. To this solution was added a solution of sulfuric acid precipitate weight was 3.03 g precipitate, and the remaining solution was passed hydrogen sulphide, while a precipitate formed that was separated and calcined in air to a constant weight. The weight of the solid residue was found to be 3.2 g Determine the mass fractions of metal in an alloy.

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


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