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Azomethane decomposes into nitrogen and ethane at elevated temperature: H3C–N=N–CH3 → N2 + C2H6 A chemist...

Azomethane decomposes into nitrogen and ethane at elevated temperature:
H3C–N=N–CH3 → N2 + C2H6
A chemist studying this reaction at 300°C begins an experiment with an azomethane concentration of 8.16 mM and obtains the following data:

Time(s) 100 150 200 250 300
[Azomethane] (mM) 6.32 5.57 4.90 4.31 3.80

Calculate the rate constant. Give an answer with concentration units of molarity and time units of seconds.

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