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The reactant concentration in a second-order reaction was 0.640 M after 240 s and 8.3010-2 M after 820 s. What is the rate constant

The reactant concentration in a first-order reaction was 9.3010-2 M after 35.0 s and 6.4010-3 M after 70.0 s

The reactant concentration in a second-order reaction was 0.640 M after 240 s and 8.3010-2 M after 820 s. What is the rate constant for this reaction? The reactant concentration in a first-order reaction was 9.3010-2 M after 35.0 s and 6.4010-3 M after 70.0 s . What is the rate constant for this reaction? Expre

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