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please help a Suppose the half-life is 52.5 s for a first order reaction and the reactant concentration is 0.0644 M 34.2 s after the

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a Suppose the half-life is 52.5 s for a first order reaction and the reactant concentration is 0.0644 M 34.2 s after the reaction starts How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0221M

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