138. Solving a chemistry problem
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138. Solving a chemistry problem
91. How many percent of Fe2O3 does the sample contain if 38.4 cm3 of KMnO4 solution with T KMnO4 / Fe = 0.000110 g / cm3 is spent on titrating it after dissolving and reducing iron to Fe2. The sample weighed in is 0.1700 g.
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