2,2-dimethyl-4-propyloctane has how many secondary carbons? view available hint(s) 2,2-dimethyl-4-propyloctane has how many secondary carbons? five nine six seven

            2,2-dimethyl-4-propyloctane has SIX secondary carbons.

Explanation:

Secondary Carbon:
                              In organic compounds secondary carbon is that carbon which is bonded to two carbon atoms and two hydrogen atoms. Below Red arrows indicate secondary carbons.

Primary Carbon:
                          Primary carbon is that carbon which is further attached to one carbon atom and three hydrogen atoms. Below in structure Blue arrows indicate primary carbons.

Tertiary Carbon:
                         These are those carbons which are bonded to to at least three carbon atoms. Below Green arrows indicate tertiary carbons.

The answer is 65.3312