A chemistry graduate student is studying the rate of this reaction: 2NH, (g) – N, (g) +3H, (g) She fills a reaction vessel with NH, and measures its concentration as the reaction proceeds: time [NH,] (seconds) 0.0100M 10. 0.00231 M 20. 0.00130M 30. 9.09 × 10 40. 6.98 × 10M

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