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Al2 O3 is reduced by electrolysis at ow...

`Al_2 O_3 ` is reduced by electrolysis at ow potentials and high currents, If `4.0 xx 10^(4)` amperes of current is passed through molten `Al_2O_3` fro `6` hours , what mass of alumininum is produced ? (Assume ` 100%` current efficiency gt At mass of ` Al = 27 g ` "mol"^(-) )`.

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