Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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Question

Molecular weight data for some polymer are tabulated here. Compute (a) the
number- average molecular weight and (b) the weight-average molecular
weight. (c) If it is known that this material’s degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer? Why?

Molecular Weight Range (g/mol) 15,000–30,000 0.04 0.01 30,000–45,000 0.07 0.04 45,000-60,000 60,000–75,000 75,000–90,000 90,000–105,000 105,000–120,000 0.16 0.11 0.26 0.24 0.24 0.27 0.12 0.16 0.08 0.12 120,000–135,000 0.03 0.05
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Transcribed Image Text:Molecular Weight Range (g/mol) 15,000–30,000 0.04 0.01 30,000–45,000 0.07 0.04 45,000-60,000 60,000–75,000 75,000–90,000 90,000–105,000 105,000–120,000 0.16 0.11 0.26 0.24 0.24 0.27 0.12 0.16 0.08 0.12 120,000–135,000 0.03 0.05
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