1. (2 points) Write an accurate chair structure for the most stable conformation of the most stable isomer of 1,3-dimethylcyclohexane. Is it cis or trans?

---

2. (2 points) Write an accurate chair structure for the most stable conformation of the most stable isomer of 1,4-dimethylcyclohexane. Is it cis or trans?

---

3. (4 points) Write Newman diagrams for all three staggered conformations of
2,2,3-trimethylpentane - viewing down the C3-C4 bond.
Predict their relative stability.

---

4. (2 points) Give complete names for the following:

a)

cis-1-bromo-2-isobutylcyclobutane
or cis-1-bromo-2-(2-methylpropyl)cyclobutane

b)

bicyclo[4.2.2]decane