Question

Calculate the mass percent of carbon in one mole of $CHC{l}_3$.

• A. 10
• B. 15
• C. 18
• D. 20

Answer 1

Answer: (A)

10

Total mass of $CHC{l}_3$ is $=12.011+1.008+(3\times 35.453)=118.376$.

Hence mass percent of Carbon is

$=\frac{12.011}{118.376}=0.101$. Hence about $10.1$ %.