Solving a problem in chemistry section 10 point 43

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Uploaded: 26.05.2014
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43. The alloy of copper, lead, iron and zinc weighing 6.49 g was treated with a solution of nitric acid. To this solution was surged excess sulfuric acid solution, thus formed precipitate weight was 3.03 g in the remaining solution was passed hydrogen sulphide, resulting in a precipitate weight was 3.84 in the remaining solution was added concentrated ammonia solution, while precipitate mass 1 07 was calculated mass fractions of metal in the mixture.

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

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