Aspirin is the analgesic acetylsalicylic acid C9H§O4. What is the coefficient of water in the balanced equation for the combustion of solid acetylsalicylic acid to carbon dioxide and liquid water? (Balance the equation with the smallest possible whole number coefficients.) 1. 8 2. 1 3. 4 O 4. 2 5. 5 O 6. 10 7. 6 O 8. 3 O 9. 7 10. 9

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".