27. Решение задачи по химии №002 777

37. From a sample of 2.4110 g of magnesite, an calcined precipitate of magnesium pyrophosphate Mg2P2O7 was obtained during the analysis, having a mass of 2.1710 g. Calculate the mass fraction in the test sample: a) magnesium; b) magnesium oxide; c) magnesium carbonate.

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