Al2O3 is reduced by elecrrolysis at low ...

`Al_2O_3` is reduced by elecrrolysis at low potentals and high current. If `4.0xx10^4` amperes of current is passed through molten `Al_2O_3` for 6 hours, what mass of aluminium is produced?

`8.1xx10^4 g`

`2.4 xx10^5g`

`1.3 xx10^4 g`

`9.0xx10^3g`

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