The molecule on the left has a molecular formula of C 6 H 12 while the one on the right has a molecular formula of C 6 H 14 . Since they have different numbers of hydrogens, they cannot be isomers. Mo...The molecule on the left has a molecular formula of C 6 H 12 while the one on the right has a molecular formula of C 6 H 14 . Since they have different numbers of hydrogens, they cannot be isomers. Molecules of alcohol A contain a branched carbon chain and can be oxidized to an aldehyde; molecules of alcohol B contain a linear carbon chain and can be oxidized to a ketone; and molecules of alcohol C can be oxidized to neither an aldehyde nor a ketone.