Question

Aluminum oxide is decomposed to extract pure aluminum from the mineral. If 6.7 tons of aluminum oxide is mined, calculate the mass of pure aluminum produced?

Answer 1

Al2O3 when only Al is wanted, you get 3.618 tons.

Explanation:

1 mole of aluminum oxide has a molecular weight of 102 grams (Al=27 grams and O=16 grams). It means that for 1000 kg of compound you can get 529 kilograms of aluminum (in pure quality). The ratio is `=54/102=0.529`

For 6.7 tons it means `0.529*6.7=3.544` tons or `3544` kg of aluminum you can get.