Which of two diols: ethan-1,2-diol or 2,2-bis(4-hydroxyphenyl)propane would you choose for polycondensation with dicarboxylic acid, if...
- Which of two diols: ethan-1,2-diol or 2,2-bis(4-hydroxyphenyl)propane would you choose for polycondensation with dicarboxylic acid, if you want to obtain:
a) Transparent polyester b) Polyester with higher Tg
Homework Answers
a) Transparent Polymer :- We need condensation of ethan-1,2-diol with dicarboxylic acid ( tetraphthalic acid ) to produce transparent polymer.
b) Polymer with high Tg :- The condensation of 2,2-bis(4-hydroxyphenyl)propane with dicarboxylic acid to produce polymer with high Tg
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Which of two diols: ethan-1,2-diol or
2,2-bis(4-hydroxyphenyl)propane would you choose for
polycondensation with dicarboxylic acid, if...
which of the following would give be RM-016 Which of the following would give benzene-1,2-dicarboxylic acid...
which of the following would give be
RM-016 Which of the following would give benzene-1,2-dicarboxylic acid upon treatment with potassium permanganate? A B С D Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer a A b B c d D Unanswered Save
Which one of the following diols would cleave into two different fragments with HIO4? A) (1S,25)-1,2-cyclopentanediol...
Which one of the following diols would cleave into two different fragments with HIO4? A) (1S,25)-1,2-cyclopentanediol B) 4,5-octanediol C) 2,3-pentanediol D) (1R,2.S)-1,2-cyclopentanediol
RM-Q16 Which of the following would give benzene-1,2-dicarboxylic acid upon treatment with potassium permanganate? A B...
RM-Q16 Which of the following would give benzene-1,2-dicarboxylic acid upon treatment with potassium permanganate? A B с D Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. а А b B с с d D RM-033 Please match the reagents and steps. Letters may be used more than once. 2 3. ОН ОН 4 OH a) H20 cat. b) HO OH OH cat H c) 1) LAIH. 2) H30 Drag and drop...
Question 2 (10 points) You are given the following model y-put ei. Consider two alternative estimators of β, b2xvix? and b = Zy/X 1. Which estimator would you choose and why if the model satisfies al...
Question 2 (10 points) You are given the following model y-put ei. Consider two alternative estimators of β, b2xvix? and b = Zy/X 1. Which estimator would you choose and why if the model satisfies all the assumptions of classical regression? Prove your results. (4 points) 2. Now suppose that var(y)-hxi, where h is a positive constant (a) Obtain the correct variance of the OLS estimator. (2 points) (b) Show that the BLU estimator is now 6. Derive its variance....
To convert benzaldehyde to 3.phenyl-2-propenoic acid which reagent would you choose to initially react benzaldehyde with?...
To convert benzaldehyde to 3.phenyl-2-propenoic acid which reagent would you choose to initially react benzaldehyde with? OA он ОВ. OH Ос OEL DB What is the major product of this reaction? MeNH2 H30+ HN HN А B с D A B с D Which reaction sequence would convert 1H-indene to 1-deuterioindane? A. 1. HCL 2. Nal 3. D20 B. 1. D2, Pd/C 2. Cl2, hv 3. Mg(s), Et20 4. H20 C. 1. BH3.THF 2. H202, OH" 3. PBr3 4. Mg(s),...
only choose one, which of these investments would you choose? 4. You are given the following...
only choose one, which of these investments would you choose? 4. You are given the following information. Weight (proportion of portfolio) Risk (standaro deviation of return) 3% 9% Return Hotel Hotel X Y 10% 20% 75% 25% Hotel a. Calculate the expected return of the portfolio. b. Calculate the standard deviation of the portfolio with a ρ of +1.0. C. Calculate the standard deviation of the portfolio with a ρ of 0. d. Calculate the standard deviation of the portfolio...
Question 4 Multi-Part Questions. Make sure to answer ALL parts (a-c)! You have isolated two versions...
Question 4 Multi-Part Questions. Make sure to answer ALL parts (a-c)! You have isolated two versions of the same enzyme, a wild type and mutant. The marteses You have determined the following kinetic characteristics for each of the enzymes. Vmax Wild Type Km 200 umol / min 0.2mm Mutant 2 umol / min 20mm and the reaction is a two-step reaction where k.1 is much larger than k3, which enzyme has the higher affinity for substrate to you You determine...
4 Given a choice of two investments, would you choose one that pays a total return...
4
Given a choice of two investments, would you choose one that pays a total return of 30 percent over five years or one that pays 0.5 percent per month for five years? What annual rate of return does each give you? Instructions: Enter your responses in percentages to the nearest hundredth, for example, 3.00 for 3 percent. The return of 30 percent over 5 years provides an annual return of percent. The return of 0.5 percent per month for...
5. Calculate the ARR for each. 6. Which plan would you choose and why? Barden Restaurant...
5. Calculate the ARR for each. 6. Which plan would you choose and why? Barden Restaurant Group operates a chain of restaurants. The company is considering two alternative expansion plans, either opening up 8 smaller restaurants at a cost of $7,740,000 (Plan A) or opening 3 larger shops at a cost of $6,680,000 (Plan B). Each plan has an expected life of 9 years. The working capital would be released at the end for use elsewhere. Other information for the...
Practice ACS questions: Choose the compound which would be insoluble in aq. sodium hydroxide solution. а)...
Practice ACS questions:
Choose the compound which would be insoluble in aq. sodium hydroxide solution. а) H H -g" aф-о e о a О о This semester you learned about the Grignard reactions of aldehydes and ketones. Which of the following compounds can not be synthesized by the Grignard reaction of the corresponding aldehyde/ketone with EtMgBr followed by acidic work up. (MULTIPLE ANSWER) OCH (A) (D) OH OH OCH2CH3 OH OD ПС ПВ ОА For the following Grignard reaction, select...
which of the following would give be
RM-016 Which of the following would give benzene-1,2-dicarboxylic acid upon treatment with potassium permanganate? A B С D Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer a A b B c d D Unanswered Save
Which one of the following diols would cleave into two different fragments with HIO4? A) (1S,25)-1,2-cyclopentanediol B) 4,5-octanediol C) 2,3-pentanediol D) (1R,2.S)-1,2-cyclopentanediol
RM-Q16 Which of the following would give benzene-1,2-dicarboxylic acid upon treatment with potassium permanganate? A B с D Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. а А b B с с d D RM-033 Please match the reagents and steps. Letters may be used more than once. 2 3. ОН ОН 4 OH a) H20 cat. b) HO OH OH cat H c) 1) LAIH. 2) H30 Drag and drop...
Question 2 (10 points) You are given the following model y-put ei. Consider two alternative estimators of β, b2xvix? and b = Zy/X 1. Which estimator would you choose and why if the model satisfies all the assumptions of classical regression? Prove your results. (4 points) 2. Now suppose that var(y)-hxi, where h is a positive constant (a) Obtain the correct variance of the OLS estimator. (2 points) (b) Show that the BLU estimator is now 6. Derive its variance....
To convert benzaldehyde to 3.phenyl-2-propenoic acid which reagent would you choose to initially react benzaldehyde with? OA он ОВ. OH Ос OEL DB What is the major product of this reaction? MeNH2 H30+ HN HN А B с D A B с D Which reaction sequence would convert 1H-indene to 1-deuterioindane? A. 1. HCL 2. Nal 3. D20 B. 1. D2, Pd/C 2. Cl2, hv 3. Mg(s), Et20 4. H20 C. 1. BH3.THF 2. H202, OH" 3. PBr3 4. Mg(s),...
only choose one, which of these investments would you choose? 4. You are given the following information. Weight (proportion of portfolio) Risk (standaro deviation of return) 3% 9% Return Hotel Hotel X Y 10% 20% 75% 25% Hotel a. Calculate the expected return of the portfolio. b. Calculate the standard deviation of the portfolio with a ρ of +1.0. C. Calculate the standard deviation of the portfolio with a ρ of 0. d. Calculate the standard deviation of the portfolio...
Question 4 Multi-Part Questions. Make sure to answer ALL parts (a-c)! You have isolated two versions of the same enzyme, a wild type and mutant. The marteses You have determined the following kinetic characteristics for each of the enzymes. Vmax Wild Type Km 200 umol / min 0.2mm Mutant 2 umol / min 20mm and the reaction is a two-step reaction where k.1 is much larger than k3, which enzyme has the higher affinity for substrate to you You determine...
4
Given a choice of two investments, would you choose one that pays a total return of 30 percent over five years or one that pays 0.5 percent per month for five years? What annual rate of return does each give you? Instructions: Enter your responses in percentages to the nearest hundredth, for example, 3.00 for 3 percent. The return of 30 percent over 5 years provides an annual return of percent. The return of 0.5 percent per month for...
5. Calculate the ARR for each. 6. Which plan would you choose and why? Barden Restaurant Group operates a chain of restaurants. The company is considering two alternative expansion plans, either opening up 8 smaller restaurants at a cost of $7,740,000 (Plan A) or opening 3 larger shops at a cost of $6,680,000 (Plan B). Each plan has an expected life of 9 years. The working capital would be released at the end for use elsewhere. Other information for the...
Practice ACS questions:
Choose the compound which would be insoluble in aq. sodium hydroxide solution. а) H H -g" aф-о e о a О о This semester you learned about the Grignard reactions of aldehydes and ketones. Which of the following compounds can not be synthesized by the Grignard reaction of the corresponding aldehyde/ketone with EtMgBr followed by acidic work up. (MULTIPLE ANSWER) OCH (A) (D) OH OH OCH2CH3 OH OD ПС ПВ ОА For the following Grignard reaction, select...
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