Thank you for reporting, we will resolve it shortly
Q.
Mass $\%$ of carbon in ethanol is
NTA AbhyasNTA Abhyas 2020Some Basic Concepts of Chemistry
Solution:
Ethanol is $C _{2} H _{5} OH$
Molecular mass $=12 \times 2+6 \times 1+16 \times 1$
$=24+6+16=46$
Mass of carbon in ethanol $=12 \times 2=24$
Mass $ \%$ of carbon $=\frac{\text { Mass of carbon }}{\text { Molar mass of compound }}\times 100$
$=\frac{24}{46} \times 100=52 \%$