Chapter 12, Problem 12.34P

Label each pair of compounds as constitutional isomers or identical molecules, or not isomers of each other.

1. ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{3}}$ and ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{3}}$
2. and ${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_4{\text{CH}}_{\text{3}}$ ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CH}}_{\text{3}}$ and
3.