Answer the following questions. 1. why would it be difficult to recycle polyvinyl chloride into plastic bags? 2. why is hdpe a good material for boats? 3. which plastic do you think could best contain extremely corrosive material? why? 4. list two uses of high density polyethylene other than those listed in the table. 5. two plastics that are targeted for recycling from household waste are polyethylene terephthalate and high density polyethylene . one of the problems of recycling such materials is separating them. suppose you have been hired to set up a process for separating large quantities of waste plast.