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7. Which one of the following has the highest thermal resistance? H H н н CHz...
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:
Use the figure to the below to answer the next three questions: Metal Polymers Polyetylengl WT...
Use the figure to the below to answer the next three questions: Metal Polymers Polyetylengl WT w Lowergy 0.01 COST | 17) Which of the following polymers is the most recyclable? a) Polyethylene b) Polystyrene c) Polyethylene terephthalate) = PET d) poly(vinyl chloride) - UPVC 18) If they all could be recycled regardless of their materials properties, which of the following polymers should have the highest recycling value? a) Nylon b) Aluminum c) Polyethylene terephthalate) = PET d) poly(vinyl chloride)...
which one of the following compounds has the highest boiling point? QUESTIONS Which one of the...
which one of the following compounds has the highest boiling
point?
QUESTIONS Which one of the following compounds has the highest boiling point? В. | H. H . нннннн гссс -сH н -с-с-с-с-с-с-н н н е н нун нннннн All are the same ннннн н-с-с-с-с-с-н Hнс нн ннн ннннн н-с-с-с-с-с-н нсннн нНН
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...
***Please explain why you chose your answer*** н H Which of the following statements about the...
***Please explain why you chose your
answer***
н H Which of the following statements about the molecule vanillin is true? a) Each of the C-H bonds forms by overlap of a hybrid orbital with the s orbital of the hydrogen atom. b) There are 3 atoms with sp3 hybridization. c) There are 8 electrons in pi bonds and 6 lone pairs in the completed Lewis dot structure for vanillin. HO- C d) There are 7 carbons with sp2 hybridization and...
(2) 22. Of the following, which has the highest boiling point? b) CH, CH, CH, CH CH. CH CH CH OCHCH, CH, CH, CH, CH, CH...
(2) 22. Of the following, which has the highest boiling point? b) CH, CH, CH, CH CH. CH CH CH OCHCH, CH, CH, CH, CH, CH, OH (4) 18. (R)-(+)-Glyceraldehyde: H нонсон A: is levorotatory. B: rotates plane-polarized light in a counterclockwise direction. C: rotates plane-polarized light in a clockwise direction. D: is racemic. (10) 19. Assign R, S configurations to each indicated stereogenic center in the molecules below. OH HOH HOHC NH lol norepinephrine CHO FORE trans-cyclopentane-1,2-diol COOH +05...
3) (D) Which one of the following molecular orbitals will have the highest energy? 4) Choose...
3) (D) Which one of the following molecular orbitals will have the highest energy? 4) Choose how many "occupied MOS" can occur for the conjugated t-system of B-carotene and LED compounds? NH beta-carotene (a) 22 and 6 5) The diene LED material (b) 11 and 6 (c) 22 and 12 (d) 11 and 12 is not suitable for Diels-Alder [4+2) cycloaddition? 6) Which one of bicyclic isomers is appropriate for both Diels-Alder and 1,2-/1.4-additions? 7) Both 1.2- and 1,4-additions of...
6. The following systems contain water vapor (steam) in air. Which one has the highest partial...
6. The following systems contain water vapor (steam) in air. Which one has the highest partial pressure of water? You may assume ideal gas behavior. A. Saturated water vapor at 20 °C and 1 atm B. Water vapor at 90% relative humidity at 50 °C and 1 atm C. Water vapor at 90% relative humidity at 50 °C and 2 atm D. Water vapor at 70% relative humidity at 80 °C and 1 atm Explain your answer (4 pts):
b. Which of the following alkanes has the highest bolling point? 2,3-dimethylbutane: 2-methylpentane; 3-methylpentane; hexane c....
b. Which of the following alkanes has the highest bolling point? 2,3-dimethylbutane: 2-methylpentane; 3-methylpentane; hexane c. Which of the following compounds can adopt a chair conformation in which there are no axial methyl groups? 1,1-dimethylcyclohexane; cis-1,2-dimethylcyclohexane; trans-1,2-dimethylcyclohexane; trans-1,3-di methylcyclohexane d. Which of the following compounds can adopt a chair conformation which there are no axial methyl groups? cis-1,2-dimethylcyclohexane; cis-1,3-dimethylcyclohexane; trans-1,3-dimethylcyclohexane; cis-1.4-dimethylcyclohexane cis-1,2-dimethvcyclohexane (Enter the numerical value only, without any units)? e. What is the approximate di hedral angle between the...
37. Which one of the following four organe Chydrocarbon molecules has the molecular formular CH2 A...
37. Which one of the following four organe Chydrocarbon molecules has the molecular formular CH2 A c-coc-c-c C-C-C-C-C * Check all of the following that involve a hydrolysis reaction. & points) a Breakup pomers, forming monomers Water is used to break bonds to form monomers e Nucleotides are joined together to form a nucleic acid Nucleic acid breaks up to form nucleotides Water breaks up, forming Hand-OH groups on separate monomers T-Hand-OH groups form water Preduces water as a by-product...
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:
Use the figure to the below to answer the next three questions: Metal Polymers Polyetylengl WT w Lowergy 0.01 COST | 17) Which of the following polymers is the most recyclable? a) Polyethylene b) Polystyrene c) Polyethylene terephthalate) = PET d) poly(vinyl chloride) - UPVC 18) If they all could be recycled regardless of their materials properties, which of the following polymers should have the highest recycling value? a) Nylon b) Aluminum c) Polyethylene terephthalate) = PET d) poly(vinyl chloride)...
which one of the following compounds has the highest boiling
point?
QUESTIONS Which one of the following compounds has the highest boiling point? В. | H. H . нннннн гссс -сH н -с-с-с-с-с-с-н н н е н нун нннннн All are the same ннннн н-с-с-с-с-с-н Hнс нн ннн ннннн н-с-с-с-с-с-н нсннн нНН
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...
***Please explain why you chose your
answer***
н H Which of the following statements about the molecule vanillin is true? a) Each of the C-H bonds forms by overlap of a hybrid orbital with the s orbital of the hydrogen atom. b) There are 3 atoms with sp3 hybridization. c) There are 8 electrons in pi bonds and 6 lone pairs in the completed Lewis dot structure for vanillin. HO- C d) There are 7 carbons with sp2 hybridization and...
(2) 22. Of the following, which has the highest boiling point? b) CH, CH, CH, CH CH. CH CH CH OCHCH, CH, CH, CH, CH, CH, OH (4) 18. (R)-(+)-Glyceraldehyde: H нонсон A: is levorotatory. B: rotates plane-polarized light in a counterclockwise direction. C: rotates plane-polarized light in a clockwise direction. D: is racemic. (10) 19. Assign R, S configurations to each indicated stereogenic center in the molecules below. OH HOH HOHC NH lol norepinephrine CHO FORE trans-cyclopentane-1,2-diol COOH +05...
3) (D) Which one of the following molecular orbitals will have the highest energy? 4) Choose how many "occupied MOS" can occur for the conjugated t-system of B-carotene and LED compounds? NH beta-carotene (a) 22 and 6 5) The diene LED material (b) 11 and 6 (c) 22 and 12 (d) 11 and 12 is not suitable for Diels-Alder [4+2) cycloaddition? 6) Which one of bicyclic isomers is appropriate for both Diels-Alder and 1,2-/1.4-additions? 7) Both 1.2- and 1,4-additions of...
6. The following systems contain water vapor (steam) in air. Which one has the highest partial pressure of water? You may assume ideal gas behavior. A. Saturated water vapor at 20 °C and 1 atm B. Water vapor at 90% relative humidity at 50 °C and 1 atm C. Water vapor at 90% relative humidity at 50 °C and 2 atm D. Water vapor at 70% relative humidity at 80 °C and 1 atm Explain your answer (4 pts):
b. Which of the following alkanes has the highest bolling point? 2,3-dimethylbutane: 2-methylpentane; 3-methylpentane; hexane c. Which of the following compounds can adopt a chair conformation in which there are no axial methyl groups? 1,1-dimethylcyclohexane; cis-1,2-dimethylcyclohexane; trans-1,2-dimethylcyclohexane; trans-1,3-di methylcyclohexane d. Which of the following compounds can adopt a chair conformation which there are no axial methyl groups? cis-1,2-dimethylcyclohexane; cis-1,3-dimethylcyclohexane; trans-1,3-dimethylcyclohexane; cis-1.4-dimethylcyclohexane cis-1,2-dimethvcyclohexane (Enter the numerical value only, without any units)? e. What is the approximate di hedral angle between the...
37. Which one of the following four organe Chydrocarbon molecules has the molecular formular CH2 A c-coc-c-c C-C-C-C-C * Check all of the following that involve a hydrolysis reaction. & points) a Breakup pomers, forming monomers Water is used to break bonds to form monomers e Nucleotides are joined together to form a nucleic acid Nucleic acid breaks up to form nucleotides Water breaks up, forming Hand-OH groups on separate monomers T-Hand-OH groups form water Preduces water as a by-product...
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