Al(2)O(3) is reduced by electrolysis at...

`Al_(2)O_(3)` is reduced by electrolysis at low potentials and high currents. If `4.0 xx 10^(4)` amperes of current is passed through molten `Al_(2)O_(3)` for 6 hours, what mass of aluminium is produced ? (Assume 100% current efficiency, at. mass of Al = 27 g `mol^(-1)` ) -

`9.0xx10^(3)` g

`8.1xx 10^(4)` g

`2.4xx 10^(3)` g

`1.3 xx 10^(4)` g

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