Answer
2 moles of $NO_2$ are present in excess after the reaction is over.
Work Step by Step
3 moles of $NO_2$ react with 1 mole of water, so 2 moles of $NO_2$ are present in excess after the reaction is over.
Chemistry: Molecular Approach (4th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
0134112830
ISBN 13:
978-0-13411-283-1
Chapter 4 - Section 4.3 - Limiting Reactant, Theoretical Yield, and Percent Yield - Conceptual Connection - Page 151: 4.4
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