The rate of the reaction NO2 (g) + CO (g) NO(g) + CO2(g) was studied. The rate did not change when the carbon monoxide concentration was changed. The following data were obtained at a constant concentration of carbon monoxide.   Time (s) [NO2], (M) 0 0.500 1.20 x 103 0.444 3.00 x 103 0.381 4.50 x 103 0.340 Determine the rate law and the average value for the rate constant for this reaction. Show your calculations.

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