97. Solving a chemistry problem
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97. Solving a chemistry problem
33 Calculate the mass fraction (%) of FeO in a sample of technical ferrous sulfate, if 0.2545 g of Fe2O3 was obtained from a sample of 0.9200 g as a result of analysis? Calculate the mass fraction (%) of FeSO4*7H2O in the test sample. Answer: 24.89%; 96.32%.
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