Answer
(a) 1
(b) 2
(c) 1
(d) 3
Work Step by Step
(a) In one mole of FeO, we have 1 mole of iron.
(b) In Fe$_2$O$_3$, we have 2 moles of iron.
(c) In Fe(OH)$_3$, we have 1 mole of iron.
(d) In Fe$_3$O$_4$, we have 3 moles of iron.
Chemistry: An Atoms-Focused Approach
by Gilbert, Thomas R.; Kirss, Rein V.; Foster, Natalie
Published by
W. W. Norton & Company
ISBN 10:
0393912345
ISBN 13:
978-0-39391-234-0
Chapter 2 - Atoms, Ions, and Molecules - Questions and Problems - Page 73: 61
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