What type of fatty acid has 16 carbon atoms including the carboxyl carbon?

Step-by-step solution

Lipids are generally water insoluble. They could be simple fatty acids. A fatty acid has a carboxyl group attached to an R group. The R group could be a methyl (–CH3), or ethyl (–C2H5) or higher number of –CH2 groups (1 carbon to 19 carbons). For example, palmitic acid has 16 carbons including carboxyl carbon . Arachidonic acid has 20 carbon atoms including the carboxyl carbon.