Homework Blog 23

1. Repeating units in each structure

a. Monomer: 1

b. Dimer: 2

c. Trimer: 3

d. Polymer: unlimited

3. Natural polymers: cellulose, starch, nucleic acids, peptides

Synthetic polymers: polyethylene, polypropylene, polyurethane, polystyrene

6. The term "unsaturated" is used to describe alkenes and alkynes because they have other than single bonds within their structures. Alkenes have a double bond and Alkynes have a triple bond.

13. 

11. 

a. II

b. III

c. I

d. II

12. The other 75% is lost in heat, which is why the engine is so inefficient.