Determine the rate constant from the concentration-time dependence Time (s) [Rea

Question

Determine the rate constant from the concentration-time dependence Time (s) [Reactant] (M) 0.0 10 20 50 70 0.0350 0.0223 0.0142 0.0037 0.0015 Use Sl units, that is, seconds for time (not included in answer) Answer: Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0782 M 25.2 s after the reaction starts and is 0.0285 M 56.3 s after the reaction starts Answer Suppose the half-life is 50.8 s for a first order reaction and the reactant concentration is 0.0860 M 64.9 s after the reaction starts. How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0102 M? Answer:

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Determine the rate constant from the concentration-time dependence Time (s) [Rea

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