996. Determine the metal released at the cathode during the electrolysis of an aqueous solution of its nitrate, if the mass of the released metal m, the current strength I, the process time τ and the cathode current efficiency coefficient β are known. Write the equations for the electrode processes and the total electrolysis reaction.
№ m, g I, A τ, h β, %
996 89.1 15 6 90
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