Answer:
Option g. (9)
Explanation:
Let's think the equation. In a combustion, the oxygen is the reactant and the products are COâ‚‚ and water. So the reaction must be:
C₉H₈O₄  +  O₂  →  CO₂  +  H₂O
If balance the equation would find out that the coefficient of oxygen is 9 Â .
C₉H₈O₄  +  9O₂  →  9CO₂  +  4H₂O