So based on the given figure above, here are the compounds represented by each of the following structural formulas: A. Pentane - It is classified as pentane because it is a straight chain having 5 carbons. B. 3-methylpentane -It is a straight chain with five carbons plus a methyl group (CH3). C. 2,5-dimethylhexane - the longest chain consists of 6 carbons (hexane) and on carbon 2 and 5, each have a methyl as a side chain. Hope these answers help.
