Calculate the number-average molar mass and the weight-average molar mass of a mixture of two polymers, one having M = 62 kg mol−1 and the other M = 78 kg mol−1, with their amounts in moles in the ratio 3:2.

Calculate the number-average molar mass and the weight-average molar mass of a mixture of two polymers, one having M = 62 kg mol−1 and the other M = 78 kg mol−1, with their amounts in moles in the ratio 3:2.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter21: Structure And Bonding In Solids

Section: Chapter Questions

Problem 26P

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Question

Calculate the number-average molar mass and the weight-average molar mass of a mixture of two polymers, one having M = 62 kg mol⁻¹ and the other M = 78 kg mol⁻¹, with their amounts in moles in the ratio 3:2.

Definition Definition Large and very high-molecular-weight substances that consist of hundreds to thousands of repeating units. Polymers are also known as macromolecules. Number-average-molecular weight is the measuring system for the polymers.

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