Answer
The number of atoms is found by multiplying the subscript of the atom by the subscript of the parenthesis.
Work Step by Step
$Ba(NO_{3})_{2}$ has 2 Nitrogens and 6 Oxygens for every Barium.
(1 x 2) = 2
(3 x 2) = 6
Introductory Chemistry (5th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
032191029X
ISBN 13:
978-0-32191-029-5
Chapter 5 - Molecules and Compounds - Exercises - Questions - Page 156: 6
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