73. Simple substance weighing 4 grams, formed part A, b

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73. Simple substance weighing 4 grams, formed part A, burned in an oxygen atmosphere. The resulting material was dissolved in 60 g of 20% sodium hydroxide solution. Identify the element A, if it is known that when dissolved turned 96 g solution and the mass fraction of alkali decreased to 12.5%.

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


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