Mass % of carbon in ethanol is

Question

Mass % of carbon in ethanol is (A) 52 (B) 13 (C) 34 (D) 90

Tardigrade Admin · Accepted Answer

Ethanol is C 2 H 5 OH Molecular mass =12 × 2+6 × 1+16 × 1 =24+6+16=46 Mass of carbon in ethanol =12 × 2=24 Mass % of carbon =( text Mass of carbon / text Molar mass of compound )× 100 =(24/46) × 100=52 %

Q. Mass $%$ of carbon in ethanol is

52

13

34

90

Ethanol is $C_{2} H_{5} O H$
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 $= \frac{Mass of carbon}{Molar mass of compound} \times 100$
$= \frac{24}{46} \times 100 = 52%$

Q. Mass % of carbon in ethanol is

52

13

34

90

Ethanol is C2​H5​OH Molecular mass =12×2+6×1+16×1 =24+6+16=46 Mass of carbon in ethanol =12×2=24 Mass % of carbon = Molar mass of compound Mass of carbon ​×100 =4624​×100=52%

Q. Mass $%$ of carbon in ethanol is

Ethanol is $C_{2} H_{5} O H$
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 $= \frac{Mass of carbon}{Molar mass of compound} \times 100$
$= \frac{24}{46} \times 100 = 52%$