A polyethylene has a molecular weight of 3 million. The C-C bond length is 0.154 nm and C(infinity) is 6.8.

1. Assuming an all trans conformation, what is the contour length of the chain (length of the chain stretched out)?

2. Using freely jointed chain model, what is the end to end length?

3. Free rotation chain model

4. Using real chain model, what is the end to end chain length?