HOMEWORK HELP

Question

) if you want to produce 1.00 g of aluminum, how much bauxite ore would you have to extract?

2) was your percent yield value calculated from the laboratory 100%. If not, propose reasons it might not be 100%
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Answer 1

Can't answer this question without more information.  Bauxite is a mixture of aluminum compounds, mainly Al(OH)3, but there are others.  So, to know how much bauxite to use to generate 1.00 g of Al, more information about composition, percent yield, etc will be needed.  If the bauxite were to be pure Al(OH)3, then 1 mole would generate 1 mole of Al and one mole of Al is 23 g.  So, you'd need 1/23 of a mole, and since Al(OH)3 has a molar mass of 78 g/mole, you'd need 

1/23 x 78 = 3.39 g