124. Solving a chemistry problem
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124. Solving a chemistry problem
347. To neutralize 0.3847 g of a mixture consisting only of K2CO3 and Na2CO3, 16.30 ml of an HCl solution with a concentration of 0.1920 mol / l is used during titration with phenolphthalein. What is the mass fraction of K2CO3 in the mixture?
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