Answer
$M=66,680.6\ g/mol$
Work Step by Step
There are 4 atoms of iron (atomic weight 55.845 g/mol) per molecule of hemoglobin.
Mass fraction of iron:
$0.335/100=4\times55.845/M$
$M=66,680.6\ g/mol$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 2 Atoms, Molecules, and Ions - Study Questions - Page 95i: 148
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