Question

Use the balanced equation to solve the problem.2Al2O3 → 4AI + 30₂4.80mol of aluminum are produced.How many moles of O₂ are made?mol

Answer 1

Explanation

Given

`2Al_2O_3\rightarrow4Al_+3O_2`

number of moles of Al = 4.80 mol

Required: Moles of O2

Solution

Use the stoichiometry to calculate the moles of O2

The molar ratio of Al to O2 is 4:3

Therefore moles of O2 = 4.80 x (3/4) = 3.6 mol

Answer

moles of O2 = 3.6 mol