Problem: A particular reactant decomposes with a half-life of 119 s when its initial concentration is 0.303 M. The same reactant decomposes with a half-life of 239 s when its initial concentration is 0.151 M. Determine the reaction order. What is the value and unit of the rate constant for this reaction?

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A particular reactant decomposes with a half-life of 119 s when its initial concentration is 0.303 M. The same reactant decomposes with a half-life of 239 s when its initial concentration is 0.151 M. 

Determine the reaction order. 

What is the value and unit of the rate constant for this reaction?

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