8. Prepare S-2-chloropentane from the appropriate alcohol and SOC2. Show appropriate stereochemistry of product. That is, DRAW the product.

£ Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the product. In the drawing area below, draw the skeletal ("line") structure of the missing organic product Y. Predict the organic product that forms in the reaction below: LOH .H two steps Click and drag to start drawing a structure. CE A

QUESTION 19 On the phase diagram below the triple point is_(1), the critical point is _(2), and the line representing melting is_(3)_. 4.0 E P (atm) 3.0 2.0 1.0 30 A F 40 ‚B → H G C 50 60 70 T (degrees C) D 80

Consider the four hypothetical metals W, X, Y, and Z. The following observations were made when Y and W were inserted into X(NO3)2 and Z(NO3)2 solutions. W(s) + X² + (aq) →→X(s) + W²+ (aq) Y(s) + Z²+ (aq) → Z(s) + Y²+ (aq) Y(s) + X²+ (aq) → no reaction W(s) + Z²+ (aq) → Z(s) + W²+ (aq) The best reducing agent is:

What are A, B, and C in the following table, and explain each of them briefly? E₁ A: MA hv=E₂ - E₁ M B: E₁ M M M hv=E₂-E₁ C: E, E₁

CONCLUSIONS: In general, the boiling points of compounds increase down a group in the periodic table. The melting points and boiling points for the hydrogen compounds of group 6A elements are in the table below. Melting Point (°C) Boiling Point (°C) H₂O 0.0 100.0 H₂S -82.0 -60.0 H₂Se -65.7 -41.2 H₂Te -49.0 -2.2 Use your understanding of chemistry to propose an explanation for the anomaly in the trend for the hydrogen compounds of group 6A elements shown in the table.

11. 1) Zn(Hg), HCI Ph 2) NBS, UV light (1 equivalent) OCH,CH3 12. 1) Br2, Fe 2) H2O, H3O*

Calculate the weight of salicylic acid (FW: 138.12) needed to generate 6.00 g of aspirin (FW: 180.16), given that the recrystallization has 78% yield. how many moles of aspirin was produced?   a. 0.0427 moles b. 0.0347 moles c. 0.0278 moles d. 0.0333 moles