Practice question
Question
In the estimation of carbon and hydrogen, 0.18 g of a compound gave 0.528 g of CO₂ and 0.108 g of H₂O. What is the percentage of hydrogen?
Explanation
Mass of H = (2/18) × 0.108 = 0.012 g. Percentage = (0.012/0.18) × 100 ≈ 6.67% ≈ 7%.
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