27. Solving a chemistry problem
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27. Solving a chemistry problem
36. In a solution prepared from ferrous sulfate FeSO4 * 7H2O, ferrous iron is oxidized by acid to ferric iron and then precipitated in the form of iron hydroxide and calcined. The mass of the calcined Fe2O3 precipitate is 0.2662 g. Calculate the content in the solution: a) iron; b) FeSO4*7H2O (c d).
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