Calculate the molecular weights of the repeat units in Table 16-3. Show your work for full credit.

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Polymer Polyethylene (PE) Polyvinyl chloride (PVC) Polypropylene (PP) Polystyrene (PS) Repeat Unit H H H C-C H H H H H H H- C-H Application Packaging films, wire insulation, squeeze bottles, tubing, household items Pipe, valves, fittings, floor tile, wire insulation, vinyl automobile roofs Tanks, carpet fibers, rope, packaging Packaging and insulation foams, lighting panels, appliance components, egg cartons Polymer Polyacrylonitrile (PAN) Polymethyl methacrylate (PMMA) (acrylic-Plexiglas) Polychlorotri- fluoroethylene Polytetrafluoroethylene (Teflon) (PTFE) Repeat Unit Η HE CEN 41 H- H H C=( F -H H F -H Application Textile fibers, precursor for carbon fibers, food containers Windows, windshields, coatings, hard contact lenses, lighted signs Valve components, gaskets, tubing, electrical insulation Seals, valves, non-stick coatings