Answer question number 16. The question is in the image.

The exercises refer to hydrocarbons. Depending on the type of bond, it will be the termination of the name of the molecule.
For a single bond: End with the suffix -ane
For double bond: Ends in -ene
For triple bond: Ends in -yne
Let's look at each particular case
a) Heptene
Hept- means 7 carbons, so we have a compound with 7 carbons and one double bond. The formula will be:
[tex]CH_2=CH-CH_2-CH_2-CH_2-CH_2-CH_3[/tex]c)Hexane
6 carbons with a simple bond
[tex]CH_3-CH_2-CH_2-CH_2-CH_2-CH_3[/tex]d)Pentane
5 carbons with a simple bond
[tex]CH_3-CH_2-CH_2-CH_2-CH_3[/tex]e)Propyne
3 carbons with a triple bond
[tex]CH\equiv C-CH_3[/tex]