Please answer this!!! 1) Shown below is a partially filled table indicating the weight percent difference that end-groups make up of a polymer of varying degrees of polymerization (N). Mapprox. is theapproximate weight of the polymer NOT accounting for end groups whereas M is the mass ofthe polymer accounting for end groups. Complete the table down below and suggest whypolymer chemists don't account for the weight of end groups when they make polymers ofhigh molecular weight.10457H 1NMMapprox.% Difference10109810405.325265826002.250100500

FormulaeMapprox. = N x monomer weightM = Mapprox. + mass of end groups% Difference = ((M -…

Answered: 1) Shown below is a partially filled…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter22: Organic Chemistry And Biochemistry

Section: Chapter Questions

Problem 9QE

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2. Molecular weight data for some polymer are tabulated here. Compute (a) the number- average molecular weight and (b) the weight-average molecular weight. (c) If it is known that this material's degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer? Why? Molecular Weight Range (g/mol) 15,000–30,000 0.04 0.01 30,000–45,000 45,000–60,000 60,000–75,000 0.07 0.16 0.04 0.11 0.26 0.24 0.24 0.12 75,000–90,000 0.27 90,000–105,000 105,000–120,000 120,000–135,000 0.16 0.08 0.12 0.03 0.05
again to form the polymer's long chain. 12) For the general formula C6H140, draw the structures of three isomeric alcohols that illustrate primary, secondary and tertiary alcohol structures.
No plagiarism please! 12. Define a polymer and describe why using a structural formula would be useful when representing the compound on paper?
Match the type of functional groups present in a polymer chain with the pH at which they are most likely soluble in. please chose which specific pH according to drop down Concept: [AMINE/CARBOXYL] groups increase solubility at [LOW/HIGH] pH. Group of answer choices -NH2 [ Choose ] any pH pH 3 pH 7 pH 9 -COOH [ Choose ] any pH pH 3 pH 7 pH 9 -NH2 and -COOH [ Choose ] any pH pH 3 pH 7 pH 9
2. In your own words, explain the difference between step-reaction polymerization and chain-reaction poly- merization. What is the advantage of this terminology over the more traditional addition and condensa- tion polymerization?
Below is the tabulated molecular weight data for a polytetrafluoroethylene [-(C₂F4)-]n material. Compute for (a) the number-average molecular weight, (b) the weight- average molecular weight, and (c) the degree of polymerization. Atomic weight data: Carbon (12.01 g/mol); Fluorine (18.998 g/mol). Copy the table on your examination paper and include tabulated data of Xi, Wi, Mi, MiXi and MiWi Molecular Weight Range (g/mol) 10,000 - 20,000 20,000-30,000 30,000 - 40,000 40,000 - 50,000 50,000 - 60,000 60,000 - 70,000 70,000 - 80,000 80,000-90,000 Mass, g 0.5 2.0 5.5 11.5 12.0 9.0 6.0 3.5 Length, cm 1.5 4.5 7.5 12.5 11.0 7.0 4.0 2.0
1. Draw 2D chemical representations of atactic, syndiotactic, and isotactic polystyrene. 2. Calculate molecular weights, Mn and Mw, of the following polymer solution. What is the polydispersity index? M1. 3000 g/mol 3000 chains M2. 3,000,000 g/mol 10 chains M3. 50,000 g/mol 200 chains 3. Draw and label the generalized polymer structures for a polyurethane, polyanhydride, polyester, polyamide and polyether. 4. How is crystallinity difference between metals, ceramics, and polymers? 5. For my medical device, I wish to create a material that is soft and will retain a lot of water. But I also want it to be rigid and can withstand up to 50lbs of force. What material should I use? 30°F Cle DO
What is the basic mechanism of an Anionic polymer (acrylic acid based as carbomers) in regards to function and “activation”? How do they work and thicken?
1. What is the mass per repeating unit of PET (in g / mol)? Explain why this number should be used for determining limiting reagent and yield and not the actual molecular weight of the polymer (which is >> 10,000 g / mol).
Show three units of a linear silicone polymer made from (CH₃)₂Si(OH)₂ with some (CH₃)₃SiOH added to end the chain.
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What is molecular shape/conformation of polymer? What is the main characteristic ofpolymer affected by molecular shape?

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