Chemistry: If it takes 30 seconds for a reactant concentration to decrease from 1.0 m to 0.5 m in a first-order chemical reaction, then what is the rate constant for the reaction? a. 0.033 s^–1 b. 0.046 s^–1 c. 0.023 s^–1 d. 43 s^–1

If it takes 30 seconds for a reactant concentration

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ikahypp

30.12.2021

The answer is A. For a first-order chemical reaction, the rate constant k has a relationship with concentration C as follow: dC/dT=k*C. So in this reaction, (1-0.5)/30=k*0.5. So k=0.033

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Ответ:

michelemosbahiow6yya

07.05.2023

Chemistry

The correct answer is: [B]: "chlorofluorocarbons (CFC's)" .

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If it takes 30 seconds for a reactant concentration to decrease from 1.0 m to 0.5 m in a first-order chemical reaction, then what is the rate constant for the reaction? a. 0.033 s^–1 b. 0.046 s^–1 c. 0.023 s^–1 d. 43 s^–1

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