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Chemistry · Some Basic Concepts of Chemistry
हिन्दीWhat is the mass percentage of carbon in ethanol (\( \text{C}_2\text{H}_5\text{OH} \))? (Atomic masses: \( \text{C} = 12.011\text{ u} \), \( \text{H} = 1.008\text{ u} \), \( \text{O} = 16.00\text{ u} \))
Correct answer · Option 3
\( 52.14\% \)
Explanation
Molar mass of ethanol \( = 2(12.011) + 6(1.008) + 16.00 = 46.068\text{ g/mol} \). Mass % of C \( = \frac{24.022}{46.068} \times 100 = 52.14\% \).
