Answer
The mineral sources of the following metals are
a. Fe: Hematite, Magnetite
b. Cinnar
c. Vanadinit, Carnotite
d. Columbite
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 23 - Sections 23.1-23.5 - Expected Value and Variance - Problems by Topic - Page 1094: 19
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