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September 13th 2009, 03:53 PM
What mass of aluminium oxide would need to be electrolysed to produce 20 kg of pure aluminium?
2Al2O3 → 4Al + 3O2
[Relative atomic masses: Al = 27.0; O = 16.0]
18.9kg
31.9kg
37.8kg
115.1kg
i guess it's not 18.9 ......................
Last edited by noise94; September 13th 2009 at 04:37 PM.
Reason: Merged posts.
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