`90%` of the first order reaction is completed in 70 minutes. The velocity constant of the reaction is :

A first order reaction is 50 % completed in 30 minutes . The rate constant of the reaction is

A first order reaction is 20 % complete in 10 minutes. Calculate Specific rate constant of the reaction

A first - order reaction is 20% complete in 10 minutes. Calculate the rate constant of the reaction.

A first-order reaction was 70 percent complete in 20 minutes. What is the rate constant of the reaction?

A first order reaction is 20% complete in 10 minutes. What is the specific rate constant for the reaction?