62. The mixture of aluminum oxide and chromium (ІII) wa

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62. The mixture of aluminum oxide and chromium (ІII) was treated with an excess of a concentrated alkali solution. The solution was filtered. The precipitate was separated, washed, dried and calcined with sodium hydroxide, and the salt was formed, the mass of 16.05 filtrate was passed through an excess of carbon dioxide, whereby a precipitate weight was 3.9 Determine the mass fraction of chromium oxide (III) in a mixture of .

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


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