Question

1. A certain first order reaction has a rate constant of 0.036 min^-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M?

2. A certain first order reaction has a rate constant of 0.036 min^-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M?

3. The rate constant for a second-order reaction is 0.13 . If the initial concentration of reactant is 0.26 M, how long does it take for the concentration to decrease to 0.07 M?

4. What fraction of a reactant will remain after 18.1 seconds if the half-life is 54 seconds?

5. The initial concentration of a reactant is 0.8 M. If the rate constant for a chemical reaction involving this reactant is 0.03 s^-1, how long will it take for the reactant's concentration to be 0.03 M?

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