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(a) Compute the number-average molecular weight of the PMMA sample in g/mol. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation. (b) Compute the degree of polymerization of the PMMA sample. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation. (c) Is it possible to have a PMMA homopolymer with the given molecular weight data, and a degree of polymerization of 527? Yes or No

(a) Compute the number-average molecular weight of the PMMA sample in g/mol. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation. (b) Compute the degree of polymerization of the PMMA sample. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation. (c) Is it possible to have a PMMA homopolymer with the given molecular weight data, and a degree of polymerization of 527? Yes or No

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The molecular weight distribution for a sample of poly(methyl methacrylate) (PMMA) is given
in the attached image.

(a) Compute the number-average molecular weight of the PMMA sample in g/mol. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation.

(b) Compute the degree of polymerization of the PMMA sample. Give answer with at least four (4) significant figures. Do NOT write answer in scientific notation.

(c) Is it possible to have a PMMA homopolymer with the given molecular weight data, and a degree of polymerization of 527? Yes or No? Show your explanation or calculation in the answer sheet.

 

Molecular Weight Range (g/mol) 8,000-20,000 20,000-32,000 32,000-44,000 44,000-56,000 56,000-68,000 68,000-80,000 80,000-92,000 Wi 0.02 0.08 0.17 0.29 0.23 0.16 0.05 X₁ 0.05 0.15 0.21 0.28 0.18 0.10 0.03
Transcribed Image Text:Molecular Weight Range (g/mol) 8,000-20,000 20,000-32,000 32,000-44,000 44,000-56,000 56,000-68,000 68,000-80,000 80,000-92,000 Wi 0.02 0.08 0.17 0.29 0.23 0.16 0.05 X₁ 0.05 0.15 0.21 0.28 0.18 0.10 0.03
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