4Al + 3O2 → 2Al2O3 how many moles of Al2O3 can be made by reacting 49.2 moles of O2

Question

Looking for steps/explanation how to solve this

Answer 1

Hello, Kj,

The balanced equation tells us we get 2 moles of product for every 3 moles of O₂. If we assume that there is more than enough aluminum as a reactant, the moles of product can be found by the taking product of moles O₂ (49.2 moles in this case) and the molar ratio of (2 moles Al₂O₃/(3 moles O₂).

49.2 moles * 2/3 = moles Al₂O₃ produced. (32.8 moles)

Bob