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Q: Complete the lecithin molecule by replacing each X to show myristic acid (CH₂(CH₂)2COOH) and the Z…
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Q: H2N-CH-c- FHO- CH2 a. polar/non-polar; b. Neutral/acidic/basic c. Also write whether the side chain…
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Q: , NH +? What is the pK of NH +?
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Q: Benzoic acid (C6H5C02H) has Ka =6.3 x 10-5 a) What is the value of Kb for the benzoate ion…
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Q: Which of the equalities is true when the pH is 7.76? O [H₂A] = [H₂A¯] [HA²-] = [A³-] [H₂A¯] = [HA²-]…
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Q: 28. A new compound is synthesized and found to be a monoprotic acid with a molar mass of 248 g/mole.…
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Q: d) Does DMAP act as a Brønsted or Lewis base?
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Q: Calculate the pKa of a acid at 25°C if its conjugate base has a pKb = 1.19
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Q: What is the net charge on Phe-Asp at each pH? a. pH 1? b. at pH 7? c. at pH 14
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Q: Draw the structures of the intermediates and product of the following reaction.
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Q: Q11- At pH-5.85 A) [HL]=(H₂L] B) [L]> [H₂L] C) [H₂L]>[HL] D) [L²] = [HL]
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- F,g,a? :)Question 16 Arrange the following species in the increasing order of their stability: 1. CH;CH,CH,CH,CH,* 2. CH;CH CH,CH,CH; 3. CH;C*(CH;)CH,CH; 1,3,2 3,1,2 (c) 2,3,1 1,2,3 3,2,1 F 2,1,3 inutes remaining3. H2N -ÇH-c FHO- CH-OH CH3 a. polar/non-polar; b. Neutral/acidic/basic c. Also write whether the side chain is Hydrophobic/Hydrophilic 4. H2N FOH CH2 CH2 CH2 CH2 NH2 a. polar/non-polar; b. Neutral/acidic/basic c. Also write whether the side chain is Hydrophobic/Hydrophilic 5. H2N -ÇH-c CH2 OH a. polar/non-polar; b. Neutral/acidic/basic c. Also write whether the side chain is Hydrophobic/Hydrophilic
- C. 1. KOCH;; 2. dil. KHCO3 HO CO₂CH3Name each ammonium salt. b. (CH;CH,CH2)2NH2| c. (CHa)2NHCH,CH3* CH;COO + a. (CH3NH3)* ci- Br С.23. The boxed portion of the following structure represents a O- --H---NH NH N--H--N =N EN H. a. salt bridge. b. hydrogen bond, with the hydrogen donated by the nitrogen. c. hydrogen bond, with the hydrogen donated by the oxygen. d. hydrophobic interaction. e. hydrophilic interaction. I
- ONLY PART E AND D THEY TOLD ME TO REPOSTf. g. OCH 3 CO₂H OCH 3 pyruvic acid 1. SOCI22 2.? NaBH4 CH3OH methicillin (narrow-spectrum, B-lactam antibiotic)? H₂SO4 (cat) C6H8O4 (show structure)17. The structure among the following that represents an amide (protein) bond is: -C-OH a. -C- NH b. C. HN-- -N=C=N d.
- Predict the complete products for the following reactions of hydrocarbons and alcohols. Indicate NR if there is NO REACTIONVancomycin is an important antibiotic. It is isolated from the bacterium Streptomyces orientalis and functions by inhibiting bacterial mucopeptide synthesis. It is a last line of defense against the resistant Staph organisms that are now common in hospitals. OH HO, OH H. NHME NH H NH HO,C- “NH2 Vancomycin aglycon ОН НО In 1999, Professor Dale Boger (The Scripps Research Institute) reported a synthesis of vancomycin aglycon (aglycon = lacking a sugar) involving the following steps, among others. Compound (I) was prepared from simple starting materials by a series of steps involving forming amide bonds.4). Which of the following is the best method for preparing aspirin? II III L COOH LOCCH3 COOH Oi OCCI HO-d-CH₂- + HCOOH + CH3Cl — COOH OCCH3 IV. V. ? COOH OH COOH OH + CHC−NH, _H $8-0-80 + CH3C-0-CCH3 HO