How many grams of aluminum are in 25.0 g of aluminum oxide?

1 Answer
anor277
Feb 10, 2017

#"%aluminium by mass"# #=# #"Molar mass of aluminum"/"Molar mass of alumina"xx100%..# #"Approx 27%....."#

Explanation:

So in a molar quantity of aluminum, there is a percentage metal content of,

#(26.98*g*mol^-1)/(101.96*g*mol^-1)xx100%=??#

And in this mass of alumina there are approx. #6.6*g# of metal.

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