КО189 A portion of the analyte weighing 1.5000 g was

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189. A portion of the analyte weighing 1.5000 g was dissolved in a volumetric flask of 250 cm3. In the titration of 20.00 cm3 of this solution is to spend 18.25 cm3 of 0.1 M KOH. Calculate the mass fraction H2C2O4 in the sample.


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