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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Transcribed Image Text:3-
TABLE 1. Polystyrene Molecular Weight Information
Molecular Weight
(M, g/mol)
20,000
40,000
60,000
80,000
100,000
120,
140,000
160,000
Fraction
Mass (g)
0.30
0.90
2.20
6.00
7.00
4.00
1.80
0.90
3.
4
6.
8.
(I). As a quality control engineer for a leading producer of polystyrene, your job is to
ensure that each batch has a similar molecular weight distribution. A sample of a batch
of polystyrene yields the molecular weight information as shown above. For this sample,
calculate the:
(a) Mn (b) Mw (c) PDI
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