Question

question 11 (10 points)
what is the percent carbon in ch3ch2oh?
a) 46%
b) 35%
c) 26%
d) 52%
e) 13%

Explanation:

Step1: Calculate molar mass of \(CH_3CH_2OH\)

Molar mass of \(C = 12\ g/mol\), \(H=1\ g/mol\), \(O = 16\ g/mol\).
For \(CH_3CH_2OH\) (molecular formula \(C_2H_6O\)):
\(M=(2\times12)+(6\times1)+16=46\ g/mol\)

Step2: Calculate mass of carbon

Mass of carbon \(=2\times12 = 24\ g\) (since there are 2 carbon atoms)

Step3: Calculate percentage of carbon

Percentage of carbon \(=\frac{24}{46}\times100\%\approx52\%\)

Answer:

D. 52%