what does x and n mean on a polymer?

Question

i know the one of the two means that it is a long chain and one means it is a short chain, or something like that.

for example:

[structure of polymer]x
or
[structure of polymer]n

Answer 1

It is the same thing. It indicates how many of the monomers are linked together. Think of a linked chain. The n or x tells you how many links there are.