Molecular weight distribution data for a polytetrafluoroethylene material is plotted on the basis of (a) number fraction, and (b) weight fraction in the Figure below. Then, please (i) evaluate the number-average molecular weight (ii) evaluate the weight-average molecular weight (iii) comment on whether it is possible to heat up and reuse polytetrafluoroethylene 0.275- 0275- 0.25 0.250- 0.250- 0.24 0.23 0.22 0.225 0.225 0.200- 0200- 0.175- 0.175- 0.160- 0.150- 0.125- 0.125- 0.100- 0.100 0,075- 0.075 0.050- 0.050- 0.025- 0.025 0.000 0.000 Number Fraction 0.03 10 0.00 20 0.15 0.14 0.00 40 50 60 70 30 Molecular Weight (10 g/mol) (a) 0.04 80 90 Weight Fraction 0.04 0.01 10 20 0.11 0.18 0.12 30 40 50 60 70 Molecular Weight (10³ g/mol) (b) 0.07 80 90
Molecular weight distribution data for a polytetrafluoroethylene material is plotted on the basis of (a) number fraction, and (b) weight fraction in the Figure below. Then, please (i) evaluate the number-average molecular weight (ii) evaluate the weight-average molecular weight (iii) comment on whether it is possible to heat up and reuse polytetrafluoroethylene 0.275- 0275- 0.25 0.250- 0.250- 0.24 0.23 0.22 0.225 0.225 0.200- 0200- 0.175- 0.175- 0.160- 0.150- 0.125- 0.125- 0.100- 0.100 0,075- 0.075 0.050- 0.050- 0.025- 0.025 0.000 0.000 Number Fraction 0.03 10 0.00 20 0.15 0.14 0.00 40 50 60 70 30 Molecular Weight (10 g/mol) (a) 0.04 80 90 Weight Fraction 0.04 0.01 10 20 0.11 0.18 0.12 30 40 50 60 70 Molecular Weight (10³ g/mol) (b) 0.07 80 90
Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
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![Molecular weight distribution data for a polytetrafluoroethylene material is plotted on the basis of
(a) number fraction, and (b) weight fraction in the Figure below. Then, please
(i) evaluate the number-average molecular weight
(ii) evaluate the weight-average molecular weight
(iii) comment on whether it is possible to heat up and reuse polytetrafluoroethylene
0.275-
0275-
0.25
0.250
0.250-
0.24
0.23
0.225
0.22
0.225-
0.200
0200-
0.175-
0.175-
0.150-
0.150-
0.125-
0.125-
0.100.
0.100-
0.075
0.075-
0.050
0.050-
0.025
0.025-
0.000-
0.000
Number Fraction
0.03
10
20
0.00
0.15
0.14
0.08
30 40 50 60 70
Molecular Weight (10³ g/mol)
(a)
80
0.04
90
Weight Fraction
0.01
10
0.11
0.18
0.12
0.04
20 30 40 50 60 70
Molecular Weight (10³ g/mol)
(b)
0.07
80
90](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8505b2fa-cd38-4e95-8b0b-c37d98f8d028%2F1a181511-476b-4d22-9fe1-6add299ccd10%2F9jjukyg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Molecular weight distribution data for a polytetrafluoroethylene material is plotted on the basis of
(a) number fraction, and (b) weight fraction in the Figure below. Then, please
(i) evaluate the number-average molecular weight
(ii) evaluate the weight-average molecular weight
(iii) comment on whether it is possible to heat up and reuse polytetrafluoroethylene
0.275-
0275-
0.25
0.250
0.250-
0.24
0.23
0.225
0.22
0.225-
0.200
0200-
0.175-
0.175-
0.150-
0.150-
0.125-
0.125-
0.100.
0.100-
0.075
0.075-
0.050
0.050-
0.025
0.025-
0.000-
0.000
Number Fraction
0.03
10
20
0.00
0.15
0.14
0.08
30 40 50 60 70
Molecular Weight (10³ g/mol)
(a)
80
0.04
90
Weight Fraction
0.01
10
0.11
0.18
0.12
0.04
20 30 40 50 60 70
Molecular Weight (10³ g/mol)
(b)
0.07
80
90
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