Complete combustion of 1.0 g of a hydrocarbon produced 3.14 g of CO₂. What is the mass percentage of Carbon in the hydrocarbon?
- 14.3%
- 25.0%
- 85.6%
- 92.3%
📝 Batafsil tushuntirish
Mass of C in CO₂ = 3.14 * (12/44) = 0.856 g.Since all C comes from the hydrocarbon, %C = (0.856 / 1.0) * 100 = 85.6%.