Molecular weight data for some polymer are tabulated here. Molecular Weight Xi Wi Range (g/mol) 19000 - 34000 0.04 0.01 34000 - 49000 0.07 0.04 49000 - 64000 0.16 0.11 64000 - 79000 0.26 0.24 79000 - 94000 0.24 0.27 94000 - 109000 0.12 0.16 109000 - 124000 0.08 0.12 124000- 139000 0.03 0.05 Compute the following: (a) the number-average molecular weight. M , i 72800 g/mol (b) the weight-average molecular weight. Mw g/mol i
Molecular weight data for some polymer are tabulated here. Molecular Weight Xi Wi Range (g/mol) 19000 - 34000 0.04 0.01 34000 - 49000 0.07 0.04 49000 - 64000 0.16 0.11 64000 - 79000 0.26 0.24 79000 - 94000 0.24 0.27 94000 - 109000 0.12 0.16 109000 - 124000 0.08 0.12 124000- 139000 0.03 0.05 Compute the following: (a) the number-average molecular weight. M , i 72800 g/mol (b) the weight-average molecular weight. Mw g/mol i
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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![Molecular weight data for some polymer are tabulated here.
Molecular Weight
Xi
Wi
Range (g/mol)
19000 - 34000
0.04
0.01
34000 - 49000
0.07
0.04
49000 - 64000
0.16
0.11
64000 - 79000
0.26
0.24
79000 - 94000
0.24
0.27
94000 - 109000
0.12
0.16
109000 - 124000
0.08
0.12
124000- 139000
0.03
0.05
Compute the following:
(a) the number-average molecular weight.
M,
i 72800
g/mol
(b) the weight-average molecular weight.
Mw
i
g/mol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feebc29d3-c365-439a-aa7e-380c391fdf1d%2F09a1b9b4-e8cc-4cdd-b257-a5518cc0ee84%2Frh6w2jc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Molecular weight data for some polymer are tabulated here.
Molecular Weight
Xi
Wi
Range (g/mol)
19000 - 34000
0.04
0.01
34000 - 49000
0.07
0.04
49000 - 64000
0.16
0.11
64000 - 79000
0.26
0.24
79000 - 94000
0.24
0.27
94000 - 109000
0.12
0.16
109000 - 124000
0.08
0.12
124000- 139000
0.03
0.05
Compute the following:
(a) the number-average molecular weight.
M,
i 72800
g/mol
(b) the weight-average molecular weight.
Mw
i
g/mol
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