111. Solving a chemistry problem
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111. Solving a chemistry problem
What percentage of Na2S2O3 * 5H2O is contained in a sample of technical sodium thiosulfate, if from a sample of the preparation 0.1852 g after the oxidation of S2O3 2- to SO4 2- a BaSO4 precipitate of 0.3448 g was obtained?
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