The gas phase decomposition of nitrogen dioxide at 383 °C NO2(g)NO(g) + ½ O2(g) is second...

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The gas phase decomposition of nitrogen dioxide at 383 °C NO2(g)NO(g) + ½ O2(g) is second order in NO2.

In one experiment, when the initial concentration of NO2 was 0.449 M, the concentration of NO2 dropped to 5.84×10-2 M after 20.6 seconds had passed.

Based on these data, the rate constant for the reaction is_______ M-1 s-1?

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