4. Alkanes and Cycloalkanes

Name the following compounds. Remember that two up bonds are cis; two down bonds are cis; one up bond and one down bond are trans.

(c)

(d)

Given the following chair conformations, draw each in its planar form as if you were viewing it from above.

(d)

Given the following chair conformations, draw each in its planar form as if you were viewing it from above.

(c)

Is each of the following a cis isomer or a trans isomer?

a,

b.

c.

Which of the following is the most stable conformation of $\mathrm{cis}-1-\mathrm{ethyl}-3-\mathrm{isopropyl}\mathrm{cyclohexane}$?

Which of the following chair conformations represents $\mathrm{trans}-1,2-\mathrm{dimethylcyclohexane}$?

Which of the following substituted $\mathrm{cyclohexanes}$ is most stable?