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The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H3N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: [Select] Isoprene ✓ [Select] 145.6 101.8 45.6 74.8

The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H3N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: [Select] Isoprene ✓ [Select] 145.6 101.8 45.6 74.8

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H3N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: [Select] Isoprene✔ [Select ] 145.6 101.8 45.6 74.8
Transcribed Image Text:The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H3N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: [Select] Isoprene✔ [Select ] 145.6 101.8 45.6 74.8
The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H³N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: ✔ [ Select] 93.4 96.2 104.4 186.6 Isoprene: [
Transcribed Image Text:The number-average molecular weight of a poly(acrylonitrile-isoprene) copolymer is 15,000 g/mol with 34wt% of isoprene repeat unit (Acrylonitrile = C3H³N; Isoprene = C5Hg). For each molecule of this copolymer, what is the average number of repeat units of: Acrylonitrile: ✔ [ Select] 93.4 96.2 104.4 186.6 Isoprene: [
Expert Solution
Step 1: Basic Concept

Mass of the species in polymer = Mass percent of species x Total mass of polymer


Number of repeating units of a species= Mass of a species / Molar mass of species


Given polymer is formed by Acrylonitrile and Isoprene.

Mass percent of Acrylonitrile + Mass percent of Isoprene = 100%

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