For this exercise, match the given contour diagrams with the surfaces. Give reasons for your choice.

Match the function below with the level surfaces in the figure.

$g(x, y, z)=x^2+z^2$.

Give the mechanism and major product for the reaction of a secondary haloalkane in a polar aprotic solvent with the following nucleophiles. The $\mathrm{p} K_{\mathrm{a}}$ value of the conjugate acid of the nucleophile is given in parentheses.

(a) $\mathrm{N}_3^{-}(4.6)$

(b) $\mathrm{H}_2 \mathrm{~N}^{-}(35)$

(c) $\mathrm{NH}_3(9.5)$

(d) $\mathrm{HSe}^{-}(3.7)$

(e) $\mathrm{F}^{-}(3.2)$

(f) $\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}(9.9)$

(g) $\mathrm{PH}_3(-12)$

(h) $\mathrm{NH}_2 \mathrm{OH}(6.0)$

(i) $\mathrm{NCS}^{-}(-0.7)$

Glutathione $(\mathrm{GSH})$ is a tripeptide that serves as a mild reducing agent to detoxify peroxides and maintain the cysteine residues of hemoglobin and other red blood cell proteins in the reduced state. Complete hydrolysis of glutathione gives Gly, Glu, and Cys. Treatment of glutathione with carboxypeptidase gives glycine as the first free amino acid released. Treatment of glutathione with 2,4-dinitrofluorobenzene, followed by complete hydrolysis, gives the 2,4-dinitrophenyl derivative of glutamic acid. Treatment of glutathione with phenyl isothiocyanate does not give a recognizable phenylthiohydantoin, however.

(a) Propose a structure for glutathione consistent with this information. Why would glutathione fail to give a normal product from Edman degradation, even though it gives a normal product from the Sanger reagent followed by hydrolysis?

(b) Oxidation of glutathione forms glutathione disulfide (GSSG). Propose a structure for glutathione disulfide, and write a balanced equation for the reaction of glutathione with hydrogen peroxide.

Give the IUPAC and common names (if any) and classify the following compounds as a primary $\left(1^{\circ}\right)$, secondary $\left(2^{\circ}\right)$, tertiary $\left(3^{\circ}\right)$ amine, or as a quaternary $\left(4^{\circ}\right)$ ammonium salt:

Match the definition with the appropriate term

a. $B P$ b. $\mathrm{CO}$ c. essential hypertension d. $\mathrm{HR}$ e. hypertension f. $P R$ g. secondary hypertension

_____ Blood pressure.

Phosgene is the acid chloride of carbonic acid. Although phosgene was used as a war gas in World War I, it is now used as a reagent for the synthesis of many useful products. Phosgene reacts like other acid chlorides, but it can react twice.

(a) Predict the products formed when phosgene reacts with excess propan-2-ol.

(b) Predict the products formed when phosgene reacts with 1 equivalent of methanol, followed by 1 equivalent of aniline

(c) tert-Butyloxycarbonyl chloride is an important reagent for the synthesis of peptides and proteins. Show how you would use phosgene to synthesize tert-butyloxycarbonyl chloride.

Find the unit rate. 120 mi in 8 h

Synovial fluid moistens and lubricates the cartilaginous surfaces within a joint.

A. True

B. False

Sketch the surfaces of the ff assorted.

$$z^2-4 x^2-4 y^2=4$$

For the exercise, find the measure to the nearest unit or to the nearest square unit.

area = ________

Sketch the surfaces of the ff assorted.

$$9 x^2+4 y^2+z^2=36$$

Match the function below with the level surfaces in the figure.

$$f(x, y, z)=x^2+y^2+z^2$$

The uniform slender bar AB of mass m is given a small angular displacement from the position $\theta=0$ and then released. Determine the angular velocity of the bar as a function of $\theta$.