Homework Answers
Hi,
Answer #32: Since the CN group is alternatively above and below the plane of paper, throughout the chain, the given molecule is (d) syndiotactic.
Answer #33. Step growth polymerization --> multiple groups should be present in the molecule to grow
Correct answer is (b) polyurethane, in which -O-, C=O and N-H fucntional groups initiate polymer growth.
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31. Identify the stereochemistry present in the following polymer H CNNC (a) atactic (b) isotactic (c)...
3 Match the following polymer with the common product in which it is used (see intro...
3 Match the following polymer with the common product in which it is used (see intro for help). 1. polystyrene 2. nylon 3. polypropylene 4. low density polyethylene 5. polycarbonate a. Plastic Bags b. Water Pipes c. Cookware d. Egg containers e. Milk cartons 6. polyethylene f. Carpet and Knitted fabrics 7. polyvinylchloride 9. Automobile bumpers 8. polytetrafluoroethylene h. Rope 4. Shown below are monomers for common polymers that get made. Draw two repeating units of the polymer structure for...
4. Draw segment (can use (-----). type structure of the polymer obtained from each type of the following monomers....
4. Draw segment (can use (-----). type structure of the polymer obtained from each type of the following monomers. In each case, is it the result of a chain growth or a step growth type of polymerization? no answert a. CH=CH2 b. cech ice + IND with to c. ch=H-4H = CH2 CH3 Caneider the nalmer from nropene. In this context, what is meant by the terms a) atactic b)
1. Which one of the following has the lowest Tg? H H нн нн м dooсн)...
1. Which one of the following has the lowest Tg? H H нн нн м dooсн) H CH3 H H CI. (b) Polymethyl methacrylate (PMMA) (d) Polyvinyl chloride (a) Polypropylene (PP) (c) Polystyrene (PS) (PVC) Answer: 2. Which one of the following has the highest T? нн CH,CH н ni н CI (d) Polyvinyl (c) Polyethylene terephthalate (PET) (a) Polypropylene (PP) (b) Polystyrene (PS) chloride (PVC) Answer:
In the following equation, identify the parts labeled a, b, and c as monomer, polymer, and...
In the following equation, identify the parts labeled a, b, and c as monomer, polymer, and repeat unit. What type of polymerization (addition or condensation) is represented? Labels Monomer Polymer Repeat Unit > W n CH2=CHF — -CH2-CHF-CH2-CHF-CH2-CHF-CH2-CHF~ mr pter 1 Page 5 of 5 ube
7. Which one of the following has the highest thermal resistance? H H н н CHz...
7. Which one of the following has the highest thermal resistance? H H н н CHz O H H H H (a) Ultra high molecular (d) Polyvinyl (b) Polystyrene (PS) (c) Polyethylene terephthalate (PET) chloride polyethylene (UHMPE) (РУС) Answer: 8. Which one of the following possesses the best thermal resistance? Loi снен,сH- (d) Polyphenylene Sulfide (PPS) (a) Polybutylene terephthalate (РBT) (b) Polystyrene (PS) (c) Polyethylene terephthalate (PET) Answer:
Which of the following is a naturally occurring polymer? Select one: a. nylon b. perspex c. polyurethane d. silk e. tery...
Which of the following is a naturally occurring polymer? Select one: a. nylon b. perspex c. polyurethane d. silk e. terylene
1-15 Which of the following monomers can conceivably form isotactic polymers? HH (a) CH2-C-C-CH, CH2 -...
1-15 Which of the following monomers can conceivably form isotactic polymers? HH (a) CH2-C-C-CH, CH2 - CH2 (b) CH, Czo NH CH, - CH, CH, (c) CH3 - C=CH2 H H - C=CH, (d) CH - сн. (e) HOCHCH,OH + HO-C- 0-C-OH ? =0
1.1 A/an ____________ unit cell has Edge length = A) Simple Cubic B) BCC C) FCC...
1.1
A/an ____________ unit cell has Edge length =
A) Simple Cubic
B) BCC
C) FCC
1.2
Which method provides the average distances between planes of
atoms in a solid?
A) stoichiometric analysis
B) differential scanning calorimetry
C) X-ray diffraction
D) high pressure liquid chromatography
E) mass spectrometry
1.3
There are ______ atoms contained within a FCC unit cell.
A) 2
B) 1
C) 4
D) 3
1.4
Polyvinyl chloride is an example of which type of polymer?
A) polyester...
2- ECD 3- ICP-AES 4- TCD 5- AAS 6- GLC 7- SHE 8- SEC Q4- What...
2- ECD 3- ICP-AES 4- TCD 5- AAS 6- GLC 7- SHE 8- SEC Q4- What kind of chromatography wil be most applicable to separate the following substances: (choose from the following: gas- liquid chromatography, liquid-solid partition chromatography, reversed phase partition chromatography, adsorption chromatography, ion-exchange chromatography, gel filtration chromatography, gel permeation chromatography) (3.5 points) Chromatographic separation technique Mixture a- Gasoline fuel components (mostly a mixture of aliphatic hydrocarbon compounds) b- Free amino acids (*NH3-CHR-COO) (Analine, Leucine, Valine, aspartic acid, Glycine...
for a rate please 15. Complete the following Cannizzaro reaction C-H кон 16. Nylon is a C) polycarbonate. A) polyurethane. B) polyester. whereas the exterior is 17. The interior of a micelle is B)...
for a rate please
15. Complete the following Cannizzaro reaction C-H кон 16. Nylon is a C) polycarbonate. A) polyurethane. B) polyester. whereas the exterior is 17. The interior of a micelle is B) hydrophilic, hydrophilic D) hydrophobic, hydrophilic A) hydrophilic, hydrophobic
15. Complete the following Cannizzaro reaction C-H кон 16. Nylon is a C) polycarbonate. A) polyurethane. B) polyester. whereas the exterior is 17. The interior of a micelle is B) hydrophilic, hydrophilic D) hydrophobic, hydrophilic A) hydrophilic, hydrophobic
3 Match the following polymer with the common product in which it is used (see intro for help). 1. polystyrene 2. nylon 3. polypropylene 4. low density polyethylene 5. polycarbonate a. Plastic Bags b. Water Pipes c. Cookware d. Egg containers e. Milk cartons 6. polyethylene f. Carpet and Knitted fabrics 7. polyvinylchloride 9. Automobile bumpers 8. polytetrafluoroethylene h. Rope 4. Shown below are monomers for common polymers that get made. Draw two repeating units of the polymer structure for...
4. Draw segment (can use (-----). type structure of the polymer obtained from each type of the following monomers. In each case, is it the result of a chain growth or a step growth type of polymerization? no answert a. CH=CH2 b. cech ice + IND with to c. ch=H-4H = CH2 CH3 Caneider the nalmer from nropene. In this context, what is meant by the terms a) atactic b)
1. Which one of the following has the lowest Tg? H H нн нн м dooсн) H CH3 H H CI. (b) Polymethyl methacrylate (PMMA) (d) Polyvinyl chloride (a) Polypropylene (PP) (c) Polystyrene (PS) (PVC) Answer: 2. Which one of the following has the highest T? нн CH,CH н ni н CI (d) Polyvinyl (c) Polyethylene terephthalate (PET) (a) Polypropylene (PP) (b) Polystyrene (PS) chloride (PVC) Answer:
In the following equation, identify the parts labeled a, b, and c as monomer, polymer, and repeat unit. What type of polymerization (addition or condensation) is represented? Labels Monomer Polymer Repeat Unit > W n CH2=CHF — -CH2-CHF-CH2-CHF-CH2-CHF-CH2-CHF~ mr pter 1 Page 5 of 5 ube
7. Which one of the following has the highest thermal resistance? H H н н CHz O H H H H (a) Ultra high molecular (d) Polyvinyl (b) Polystyrene (PS) (c) Polyethylene terephthalate (PET) chloride polyethylene (UHMPE) (РУС) Answer: 8. Which one of the following possesses the best thermal resistance? Loi снен,сH- (d) Polyphenylene Sulfide (PPS) (a) Polybutylene terephthalate (РBT) (b) Polystyrene (PS) (c) Polyethylene terephthalate (PET) Answer:
1-15 Which of the following monomers can conceivably form isotactic polymers? HH (a) CH2-C-C-CH, CH2 - CH2 (b) CH, Czo NH CH, - CH, CH, (c) CH3 - C=CH2 H H - C=CH, (d) CH - сн. (e) HOCHCH,OH + HO-C- 0-C-OH ? =0
1.1
A/an ____________ unit cell has Edge length =
A) Simple Cubic
B) BCC
C) FCC
1.2
Which method provides the average distances between planes of
atoms in a solid?
A) stoichiometric analysis
B) differential scanning calorimetry
C) X-ray diffraction
D) high pressure liquid chromatography
E) mass spectrometry
1.3
There are ______ atoms contained within a FCC unit cell.
A) 2
B) 1
C) 4
D) 3
1.4
Polyvinyl chloride is an example of which type of polymer?
A) polyester...
2- ECD 3- ICP-AES 4- TCD 5- AAS 6- GLC 7- SHE 8- SEC Q4- What kind of chromatography wil be most applicable to separate the following substances: (choose from the following: gas- liquid chromatography, liquid-solid partition chromatography, reversed phase partition chromatography, adsorption chromatography, ion-exchange chromatography, gel filtration chromatography, gel permeation chromatography) (3.5 points) Chromatographic separation technique Mixture a- Gasoline fuel components (mostly a mixture of aliphatic hydrocarbon compounds) b- Free amino acids (*NH3-CHR-COO) (Analine, Leucine, Valine, aspartic acid, Glycine...
for a rate please
15. Complete the following Cannizzaro reaction C-H кон 16. Nylon is a C) polycarbonate. A) polyurethane. B) polyester. whereas the exterior is 17. The interior of a micelle is B) hydrophilic, hydrophilic D) hydrophobic, hydrophilic A) hydrophilic, hydrophobic
15. Complete the following Cannizzaro reaction C-H кон 16. Nylon is a C) polycarbonate. A) polyurethane. B) polyester. whereas the exterior is 17. The interior of a micelle is B) hydrophilic, hydrophilic D) hydrophobic, hydrophilic A) hydrophilic, hydrophobic
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