Draw the two possible chair conformations for cis-1,3-dimethylcyclohexane. Which conformation, if either, is more stable?

One of the chair conformers of cis-1,3-dimethylcyclohexane is 5.4 kcal/mol less stable than the other. How much steric strain does a 1,3-diaxial interaction between two methyl groups introduce into the conformer?

Draw both conformations for 1-ethyl-1-methylcyclohexane and decide which conformation (if any) is more stable.

Consider 1,2-dimethylcyclohexane. a. Draw structures for the cis and trans isomers using a hexagon for the six-membered ring. b. Draw the two possible chair conformations for the cis isomer. Which conformation, if either, is more stable? c. Draw the two possible chair conformations for the trans isomer. Which conformation, if either, is more stable? d. Which isomer, cis or trans, is more stable and why?

Draw a chair conformation of 1,4-dimethylcyclohexane in which one methyl group is equatorial and the other is axial. Draw the alternative chair conformation and calculate the ratio of the two conformations at $25^{\circ} \mathrm{C}$.

(a) Draw the two chair conformations of cis-1,3-dimethylcyclohexane and label all the positions as axial or equatorial. (b) Label the higher-energy conformation and the lower-energy conformation (c) The energy difference in these two conformations has been measured to be about 23 kJ (5.4 kcal) per mole. How much of this energy difference is due to the torsional energy of gauche relationships? (d) How much energy is due to the additional steric strain of the 1,3-diaxial interaction?

Find an equation for the differential $dy$.

$$y=\cos 4 x$$

What are the advantages and disadvantages of making only some of the symbols defined inside a kernel accessible to a loadable kernel module?

Two $\mathrm{C} 10 \times 20$ s are bolted to a gusset plate by four rows of 7/8-in.-diameter bolts as shown. The channels are made of A36 steel. Determine their tensile capacity if the type and total number of bolts are as follows: a. A325-F, $N=12$. b. $\quad \mathrm{A} 325-\mathrm{N}, N=12$.

Suppose the Fed somehow created enough money to pay off the entire national debt. What would happen to prices? Explain your answer.

Do you agree with Susan B. Anthony that women should receive equal pay for equal work? Explain your answer.

Describe the simplest format of an HTML applet tag. Give an example.

Consider the four isomers of 1-ethyl-4-isopropylcyclohexane in a chair conformation. Which two chair conformations represent the trans isomers in equilibrium?

Mr. Ciangiola placed this ad in the Collector Car Digest: 2007 Chevrolet HHR SUV. Orange, 4 cyl. automatic, leather, chrome wheels, wood trim, running boards, PS, PB, AM/FM/CD. Mint! $18,500. 555-7331. a. If the newspaper charges$45 for the first four lines and $7 for each extra line, how much will this ad cost? b. Sue buys the car for 5% less than the advertised price. How much does she pay? c. Sue must pay her state 4% sales tax on the sale. How much must she pay in sales tax?