Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 14 - Polymer Structures - Questions and Problems - Page 577: 14.2b


$m= 100.12 g/mol$

Work Step by Step

Required: Compute repeat unit molecular weights for poly(methyl methacrylate) Solution: From Table 14.3, each repeat unit consists of 5 carbons, 8 hydrogens and 2 oxygens. $A_{C}, A_{H},$ and $ A_{O}$ represent the atomic weights of carbon, hydrogen and oxygen, respectively. $m = 5(A_{C}) + 8(A_{H}) + 2(A_{O}) = 5(12.011 g/mol) + 8(1.008 g/mol) + 2(16.00 g/mol)= 100.12 g/mol$
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