Answer
Nitrogen.
Work Step by Step
Nitrogen will have the larger mass percentage because with a 2:1 ratio of nitrogen to oxygen, per mole of this compound will have 28g/mol nitrogen while oxygen will only have 16g/mol.
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 3 - Sections 3.1-3.12 - Exercises - Conceptual Problems - Page 136: 156b
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