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1. (2.5 point) Erythronolide Bis the biological precursor of erythromycine, a broad...
12. Erythronolide B is the biological precursor of erythromycin, a broad-spel antibiotic. How many chirality centers...
12. Erythronolide B is the biological precursor of erythromycin, a broad-spel antibiotic. How many chirality centers does erythronolide B have? H-C A CH, нсон CH / O HC H30H ***OH CHE Erythronolide B a. 8 b.9 c. 10 d. 11 13. Consider the two methyl groups indicated with letters in the following molecular model. These two groups are: a. A: axial B: axial b. A: axial B: equatorial c. A: equatorial B: axiald. A: equatorial B: equatorial 14. Which of...
4. Put an asterisk (*) next to each chiral center in the structure of erythronolide B,...
4. Put an asterisk (*) next to each chiral center in the structure of erythronolide B, a metabone precursor to the commercial antibiotic, erythromycin. H3C .CH OH CH3 нс, Toi Erythronolide R Нас Анас OH 5. Determine whether the chirality centers in the following molecules have Rors configuration. (a) H (b) OCH2CH3 (c) OH NO-C-OH HC-CH3 H₃C-C-CH₂OH (a) HOH (b) c) HOCHZ HOCH2 CO2H 6. Are the following molecules chiral or achiral? If they are chiral, put an asterisk next...
1. Assign R or S configuration to each indicated chirality center (carbon A and B) in...
1. Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (vitamin C). Which of the following assignments is correct? но OH HO H. a. carbon A (R); carbon B (S) b. carbon A (R); carbon B (R) c. carbon A (S); carbon B (R) d. carbon A (S); carbon B (S) 2. Erythronolide B is the biological precursor of erythromycin, a broad-spectrum antibiotic. How many chirality centers does erythronolide B have?...
Determine the following. Please show your work II calculations, each correct, but unsupported answer is only...
Determine the following. Please show your work II calculations, each correct, but unsupported answer is only worth 1 pont 31) The following equation describes ollowing equation describes the neutralization of phosphoric acid by the addition of potassium + hydroxide in aqueous solution: HPO4 3 KOH 3 H2O K3PO4 + If it takes 45.0 mL of 1.500 M KOH to neutralize 180,0 mL of a given H3PO4 So molarity of this phosphoric acid solution? [7 points] alize 180.0 mL of a...
Show all your work please! 200 N Problem #1 (30 points): Consider the bent rod of...
Show all your work please!
200 N Problem #1 (30 points): Consider the bent rod of 5cm diameter which is in equilibrium under the loads shown. a. Calculate the force and moment 300 N 500 N resultants acting at the center of the cross-section that includes point A, and illustrate them with a sketch. 2 m b. Calculate the non-vanishing Cartesian components of stress at point A Illustrate the state of plane stress at A with a sketch. c. 1...
12. Erythronolide B is the biological precursor of erythromycin, a broad-spel antibiotic. How many chirality centers does erythronolide B have? H-C A CH, нсон CH / O HC H30H ***OH CHE Erythronolide B a. 8 b.9 c. 10 d. 11 13. Consider the two methyl groups indicated with letters in the following molecular model. These two groups are: a. A: axial B: axial b. A: axial B: equatorial c. A: equatorial B: axiald. A: equatorial B: equatorial 14. Which of...
4. Put an asterisk (*) next to each chiral center in the structure of erythronolide B, a metabone precursor to the commercial antibiotic, erythromycin. H3C .CH OH CH3 нс, Toi Erythronolide R Нас Анас OH 5. Determine whether the chirality centers in the following molecules have Rors configuration. (a) H (b) OCH2CH3 (c) OH NO-C-OH HC-CH3 H₃C-C-CH₂OH (a) HOH (b) c) HOCHZ HOCH2 CO2H 6. Are the following molecules chiral or achiral? If they are chiral, put an asterisk next...
1. Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (vitamin C). Which of the following assignments is correct? но OH HO H. a. carbon A (R); carbon B (S) b. carbon A (R); carbon B (R) c. carbon A (S); carbon B (R) d. carbon A (S); carbon B (S) 2. Erythronolide B is the biological precursor of erythromycin, a broad-spectrum antibiotic. How many chirality centers does erythronolide B have?...
Determine the following. Please show your work II calculations, each correct, but unsupported answer is only worth 1 pont 31) The following equation describes ollowing equation describes the neutralization of phosphoric acid by the addition of potassium + hydroxide in aqueous solution: HPO4 3 KOH 3 H2O K3PO4 + If it takes 45.0 mL of 1.500 M KOH to neutralize 180,0 mL of a given H3PO4 So molarity of this phosphoric acid solution? [7 points] alize 180.0 mL of a...
Show all your work please!
200 N Problem #1 (30 points): Consider the bent rod of 5cm diameter which is in equilibrium under the loads shown. a. Calculate the force and moment 300 N 500 N resultants acting at the center of the cross-section that includes point A, and illustrate them with a sketch. 2 m b. Calculate the non-vanishing Cartesian components of stress at point A Illustrate the state of plane stress at A with a sketch. c. 1...
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