[NewMoney005]

Choose the monomers that, upon heating, would produce the following polymer.
(note that hydrogen atoms on the carbons on not explicitly shown)




So far I've realized that if you combine figure "A" with itself it forms the desired product, but I'm not sure if there are any solutions.  When you combine a with itself you form H2O (condensation) and NH₂CH₂CH₂CONHCH₂CH₂COOH.  Now if that product continues to bind with A's it will continue as the chain described.

[Borek]

http://en.wikipedia.org/wiki/Polyamides