1. Given the table below: Molecular Weight Range 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 Xị 0.05 Wi 0.02 0.15 0.08 0.21 0.17 0.28 0.18 0.29 0.23 0.10 0.03 0.16 0.05 a) Draw the graphs for the average number fraction and average weight fraction b) Determine the Mn and Wn c) if the monomer is polystyrene with the formula нн H CH; determine the degree of polymerization; Atomic weights: C = 12, H = 1
1. Given the table below: Molecular Weight Range 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 Xị 0.05 Wi 0.02 0.15 0.08 0.21 0.17 0.28 0.18 0.29 0.23 0.10 0.03 0.16 0.05 a) Draw the graphs for the average number fraction and average weight fraction b) Determine the Mn and Wn c) if the monomer is polystyrene with the formula нн H CH; determine the degree of polymerization; Atomic weights: C = 12, H = 1
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:Answer the following questions:
1.
Given the table below:
|Molecular Weight Range
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
Xi
Wi
0.02
0.05
0.15
0.08
0.21
0.28
0.17
0.29
0.18
0.23
0.10
0.16
0.03
0.05
a) Draw the graphs for the average number fraction and average weight fraction
b) Determine the Mn and Wn
c) if the monomer is polystyrene with the formula
нн
H CH;
determine the degree of polymerization;
Atomic weights: C = 12, H= 1
2. Calculate the number of Frenkel defects per
cubic meter in
Al203 if the energy required to create a Frenkel
defect is 1.75 eV at 410 °C . The density of Al203
is 3.27 g/cm3. ( Use the exact values of the
atomic weights of the elements)
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