An unknown polymer sample was found to have the following molecular weight distribution: Molecular weight range Xi 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 If the weight average DP for this sample is found to be DP=536, which of the following common polymers is this unknown sample? 0.05 0.15 0.21 0.28 0.18 0.10 Wi 0.03 0.02 0.08 0.17 0.29 0.23 0.16 0.05
An unknown polymer sample was found to have the following molecular weight distribution: Molecular weight range Xi 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 If the weight average DP for this sample is found to be DP=536, which of the following common polymers is this unknown sample? 0.05 0.15 0.21 0.28 0.18 0.10 Wi 0.03 0.02 0.08 0.17 0.29 0.23 0.16 0.05
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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An unknown polymer sample was found to have the following molecular weight distribution:
Molecular weight range
8,000-20,000
20,000-32,000
32,000-44,000
44,000-56,000
56,000 -68,000
a.
Xi
0.05
0.15
0.21
0.28
0.18
0.10
Wi
0.02
0.03
0.08
0.17
68,000-80,000
80,000-92,000
If the weight average DP for this sample is found to be DP=536, which of the following common polymers is this unknown sample?
0.29
0.23
0.16
0.05
Polymethylmethacrylate with a monomer molecular weight of 100.121 g/mol
O b.
Polystyrene with a monomer molecular weight of 104.15 g/mol
OC.
Polyvinyl chloride with a monomer molecular weight of 62.498 g/mol
Ord.
Polypropylene with a monomer molecular weight of 42.08 g/mol
O e. Polycarbonate with a monomer molecular weight of 61.0168 g/mol
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