Question

In the equation below, what is the mole ratio of aluminum to oxygen?

2 Al2O3 --> 4 Al + 3 0₂

-3:4

-4:3

-2:3

-2:7

Answer 1

Answer: 2:7

Step-by-step explanation:

The mole ratio of aluminum to oxygen is 2:7. This is because 2 moles of Al2O3 react with 7 moles of oxygen (3 moles of oxygen for each mole of Al2O3) to produce 4 moles of aluminum.