The reaction, 2 NO2(g)→ 2 NO(g)+ O2(g), has a rate constant of 0.110 L mol-1 s-1 when the temperature is 450 °C. How long, in seconds, would it take for a sample of NO2, whose concentration is initially 0.355 M, to decrease to 25.0% of its original concentration at this temperature?Hint: use the units of the rate constant to determine the order of the reaction.
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