QI/ A sample of polystyrene is composed of a series of fractions of different-sized Molecules (Chains of polymer) Fraction Weight Fraction Molecular Weight 0.10 12,000 0.19 21,000 0.24 35,000 0.18 49,000 0.11 73,000 0.08 102,000 0.06 122,000 0.04 146,000 1-Calculate the number-average and weight-average molecular weights of this polymer 2- Calculate the DPw and DPn ( Atomicweight : C=12 , H=1 , 0=16 ) ABCDEFGH

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:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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Q1/ A sample of polystyrene is composed of a series of fractions of different-sized
Molecules (Chains of polymer)
Fraction
Weight Fraction
Molecular Weight
0.10
12,000
0.19
21,000
0.24
35,000
0.18
49,000
0.11
73.000
0.08
102,000
0.06
122,000
0.04
146,000
1-Calculate the number-average and weight-average molecular weights of this polymer
2- Calculate the
DPw and DPn
( Atomicweight : C=12 , H=1 , 0=16)
ABCDEFGH
Transcribed Image Text:Q1/ A sample of polystyrene is composed of a series of fractions of different-sized Molecules (Chains of polymer) Fraction Weight Fraction Molecular Weight 0.10 12,000 0.19 21,000 0.24 35,000 0.18 49,000 0.11 73.000 0.08 102,000 0.06 122,000 0.04 146,000 1-Calculate the number-average and weight-average molecular weights of this polymer 2- Calculate the DPw and DPn ( Atomicweight : C=12 , H=1 , 0=16) ABCDEFGH
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