Question: Nitrogen dioxide (NO2) concentrations are measured in an air-quality study and decrease from 5 ppmv to 2 ppmv in 4 min with a particular light

Nitrogen dioxide (NO2) concentrations are measured in an air-quality study and decrease from 5 ppmv to 2 ppmv in 4 min with a particular light intensity.

(a) What is the first-order rate constant for this reaction?

(b) What is the half-life of NO2 during this study?

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