The structure of the addition polymer polypropylene is shown in Table 13.3.

a. Draw the structure of the monomer.

b. Show how an alternate version of the polypropylene polymer (with a different arrangement) could be formed from the monomer you found in part a.

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TABLE 13.3 Polymers of Commercial Importance Polymer Structure Addition Polymers Polyethylene Polypropylene Polystyrene Polyvinyl chloride (CH₂ CH₂) CH₂ -CH for it CH3 - CH₂ CH 13 n -CH₂- CH [C²₂-a] Uses Films, packaging, bottles Kitchenware, fibers, appliances Packaging, disposable food containers, insulation Pipe fittings, clear film for meat packaging