Answered: write the chemical structure of the…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter10: Fuels, Organic Chemicals, And Polymers

Section: Chapter Questions

Problem 126QRT

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Polyethylene (PE), polyvinylchloride (PVC), polypropylene (PP), polystyrene, an nylon are examples of
Hydrogen bonding between polyamide chains plays animportant role in determining the properties of a nylonsuch as nylon 6,6 (Table 12.6). Draw the structuralformulas for two adjacent chains of nylon 6,6 and showwhere hydrogen-bonding interactions could occur betweenthem.
Linear polyethylene; lightly branched isotactic polypropylene State whether it is possible to determine whether one polymer is more likely to crystallize than the other. If it is possible, note which is the more likely and then cite reason(s) for your choice. If it is not possible to decide, state why.
High-density polyethylene (HDPE) is opaque while low-density polyethylene (LDPE) is transparent. Briefly explain this phenomenon in terms of structure.
a) Calculate the % atom economy for the addition polymerization of polyethylene, where 280.5 g of ethylene monomers react to produce 280.5 g of polyethylene. b) Calculate the % atom economy for the condensation polymerization of nylon-6,6, where 116.21 g of hexamethylendiamine monomers and 183.03 g of adipoyl chloride monomers react together to produce 226.32 g of nylon-6,6 product and 72.92 g of hydrogen chloride waste.
1. Kevlar is a copolymer used in bullet-proof vests. It is formed in a condensation reaction between the following two monomers: H2N- -NH2 НО—С OH Sketch a portion of the polymer chain showing several monomer units. Write the overall equation for the condensation reaction.
The heat of fusion of polyethylene is approximately 7.7 kJ/mol, and the corresponding entropy is 19 J mol-1 K-1. Use these data to estimate the melting point of polyethylene.
The polyester poly(ethylene terephthalate) (PET) is produced through the condensation polymerization of a dialcohol with a diacid. Using the given molecular formulas, determine the structure of each monomer. dialcohol: C2H6O diacid: C8H6O4
Which representation(s) show polymer structures that are likely to result in rigid, hard materials and those that are likely to result in flexible, stretchable, soft materials?
In copolymers made of ethylene and vinyl acetate monomers, melting point and degree of crystallinity decrease as the percentage of vinyl acetate increases.Suggest an explanation.
Compare thermoplastic and thermosetting polymers: (a) according of mechanical characteristics upon heating; and (b) on the basis of possible molecular structures.
11. In condensation polymerization the by product formed is Choose Охудen Nitrogen Water Hydrogen

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write the chemical structure of the alternating copolymer of Nylon 6 and Nylon 8