7 - what is the mole ratio of aluminum to oxygen in the chemical reaction: 4al + 3o₂ --> 2al₂o₃

7 - what is the mole ratio of aluminum to oxygen in the chemical reaction: 4al + 3o₂ --> 2al₂o₃
Answer
Explanation:
Step1: Identify stoichiometric coefficients
In the reaction (4\text{Al} + 3\text{O}_2\to2\text{Al}_2\text{O}_3), the coefficient of (\text{Al}) is (4) and of (\text{O}_2) is (3).
Step2: Determine mole ratio
The mole ratio of (\text{Al}) to (\text{O}_2) is based on their coefficients. So it is (4:3).
Answer:
(4:3) (the fourth option in the given choices)