Question

what is the empirical formula of the molecule shown?

ch
c₂h₅
c₄h₁₀
ch₂

Explanation:

Step1: Count the number of atoms

From the structure, count the number of carbon ($C$) and hydrogen ($H$) atoms. There are 4 $C$ atoms and 10 $H$ atoms, so the molecular formula is $C_4H_{10}$.

Step2: Simplify the ratio

Find the greatest common divisor (GCD) of 4 and 10. The GCD of 4 and 10 is 2. Divide both sub - scripts by 2. For $C$: $\frac{4}{2}=2$, for $H$: $\frac{10}{2} = 5$.

Answer:

$C_2H_5$