45. Решение задачи по химии №121

3. Calculate the mass fraction (%) of iron in the ore and T(KMnO4), if after dissolving a sample weighing 0.710 g and reducing iron to Fe2+, 48.06 ml of potassium permanganate solution were used for titration (T(KMnO4/H2C2O4)=0.004502 g/ml).

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