42. Solving a chemistry problem
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42. Solving a chemistry problem
446. Determine the time required for the complete release of the substance on the cathode during electrolysis of 250 ml of a 6% solution of mercury (II) nitrate (ρr-ra \u003d 1.09 g / cm3). Current 6 A. Current output 91%. Compose the electronic equations of the processes occurring on carbon electrodes.
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