2 Al2O3 + 3C → 4Al + 3CO2 (electrorefining)
a. Calculate the Molecular Weight of Al2O3, C, Al, and CO2 in the reaction above.
Molecular weight of Al, C, and O are 27, 12, and 16, respectively.
b. If you want to manufacture 1000 kg (1 ton) of pure Al in reaction 4, calculate the total pure alumina (Al2O3) required from reaction 4.
c. If typical bauxite (alumina ore) contains 40% of alumina, calculate the total bauxite that has to be mined to produce 1 ton of pure Aluminum.