# Which compound has the empirical formula with the greatest mass? A. C_2 H_6 B. C_4 H_10 C. C_5 H_10 D. C_6 H_6

## I came across this question and it says the answer is B and I am unsure how they got the answer.

Jun 8, 2018

${\text{B. C"_4"H}}_{10}$

#### Explanation:

$\boldsymbol{\text{Formula" color(white)(.......) bb"Emperical" color(white)(.......) bb"Emperical formula}}$
$\underline{\textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots .} \boldsymbol{\text{formula" color(white)(...........) bb"mass (g/mol)}} \textcolor{w h i t e}{\ldots \ldots}}$
${\text{C"_2"H"_6 color(white)(.....................) "CH}}_{3} \textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots} 15$
"C"_4"H"_10 color(white)(...................) "C"_2"H"_5 color(white)(........’............) 29
${\text{C"_5"H"_10 color(white)(...................) "CH}}_{2} \textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots} 14$
$\text{C"_6"H"_6 color(white)(.....................) "CH} \textcolor{w h i t e}{\ldots \ldots \ldots \ldots . . \ldots \ldots . .} 13$

Mass of ${\text{C"_2"H}}_{5}$ (which is emperical formula of ${\text{C"_4"H}}_{10}$) is greatest compared to emperical formula mass of other options.