Question: please help asap For a first order reaction, the initial reactant concentraion is 0.55M. After 31.1s, the concentration is 0.39M. What is k in s1

please help asap
please help asap For a first order reaction, the initial reactant

For a first order reaction, the initial reactant concentraion is 0.55M. After 31.1s, the concentration is 0.39M. What is k in s1

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