Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 2 - Exercises: 129

Answer

63.67 g/mol

Work Step by Step

mm= molecular mass x1 = the percent of copper in the sample by mass x2= percent of sample of zinc by mass percents will be used in decimal form x1(mm1)+x2(mm2) x1=7.36/(7.36+.51)=.935 x2=.51/(7.36+.51)=.065 Multiply the decimal by molar mass and add .935*63.55+.065*65.38=63.67g/mol
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