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Nitrogen Dioxide Decomposes to Nitric Oxide and Oxygen Via the Reaction

Question 19

Multiple Choice

Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2
In a particular experiment at 300 °C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of disappearance of NO2 for this period is __________ M/s.


A) 0.35
B) 3.5 × 10-3
C) 3.5 × 10-5
D) 7.0 × 10-3
E) 1.8 × 10-3

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