A long polymer chain, such as polyethylene ( -CH2CH2- )n, can potentially exist in solution as a chiral object. Give two examples of chiral structures that a polyethylene chain could adopt.

Palmitoleic acid, a fatty acid with various pharmaceutical applications, is mainly obtained from macadamia nuts. The condensed structural formula for a triacylglycerol containing three palmitoleic acid units is provided below. Which of the following statements is NOT true regarding this triacylglycerol? O || CH,−O−C–(CH,)–CH=CH—(CH2)5–CH3 O || CH−O−C−(CH2)–CH=CH–(CH,)5–CH3 O CH,−O−C−(CH,)–CH=CH–(CH,)5–CH, O Its name is glyceryl tripalmitate or tripalmitin. O It is most likely to be liquid at room temperature. O It is an oil (not a fat). O It contains 3 molecules of the same unsaturated fatty acid.

2-bromopentane is an optically active compound. Draw the two possible structures of optical isomer and label the chiral center with an asterisk (*) in each of the optical isomer structure.