after silvery merury (I), and lead (II) ions have been removed, why can the tin (IV), copper (II), antimony (III), and bismuth (III) ions be separated

The answer should be vaporization 

Ineed with this also i hope you understand it

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. polyethylene is a plastic material called thermoplastic. one very useful property of thermoplastic is that when it is heated it turns into liquid, which can be molded into desired shape and size. also the material do not dissolve at room temperature.

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