Draw the structures for the following compounds:
$(i)$ Ethanoic acid
$(ii)$ Bromopentane
Are structural isomers possible for bromopentane?

(N/A) $(i)$ Ethanoic acid $(CH_{3}COOH)$:
$H-C(H)(H)-C(=O)-OH$
$(ii)$ Yes,structural isomers are possible for bromopentane $(C_{5}H_{11}Br)$. Three common isomers are:
$1$. $1$-Bromopentane: $CH_{3}-CH_{2}-CH_{2}-CH_{2}-CH_{2}-Br$
$2$. $2$-Bromopentane: $CH_{3}-CH_{2}-CH_{2}-CH(Br)-CH_{3}$
$3$. $3$-Bromopentane: $CH_{3}-CH_{2}-CH(Br)-CH_{2}-CH_{3}$