Draw structural representations of each of the following molecules. Be sure that your structure clearly shows the configuration at each stereocenter.

(a) (R)-3-bromo-3-methylhexane;

(b) (3R,5S)-3.5-dimethylheptane;

(c) (2R,3S)-2-bromo-3-methylpentane;

(d) (5)-l,l,2-trimethylcyclopropane;

(e) (lS,2S)-l-chloro-l-trifluoromethyl-2-methylcyclobutane;

(f) (1R,2R,3S)-1,2- dichloro-3-ethylcyclohexane.