# What are the names of the given molecules? a.

## And $b .$

$\left(a\right)$ is a hexane derivative. $\left(b\right)$ is a nonane derivative
The longest chain in $\left(a\right)$ is six carbons long, i.e. a $\text{dimethylhexane}$. I leave you to find it, and I leave you to name it. The longest chain in $\left(b\right)$ is 9 carbons long, a substituted $\text{nonane}$, with ethyl and methyl substituents along the chain.