97. When dissolving a mixture of aluminum, copper and m

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97. When dissolving a mixture of aluminum, copper and magnesium weighing 11.5 g hydrochloric acid is recovered gas volume of 7.00 dm3, measured at 273 K and a pressure of 0,8 • 105 Pa. The insoluble residue was dissolved in concentrated nitric acid. At the same time the volume of the gas emitted 4.48 dm3 (STP). Calculate the mass of each metal in the starting mixture.

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

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