Show that time required for 99.9% completion of a first order reaction is three the time required for 90% completion.

Time required to complete 90% of the first order reaction is

The half life period of a first order chemical reaction is 6.93 minutes. The time required for the completion of 99% of the reaction will be (log2=0.301)

The following table shows the frequency distribution of the time required for each worker to complete a work. From the table find the mean time required to complete the job for a worker.

Time taken for completion of G1 phase is about....

75 % of first order reaction is complete in 30 minutes. What is the time required for 93.75 % of the reaction (in minutes) ?

What is the half life of a first.order reaction if time required to decrease concentration of reactant from.0.8M to 0.2 M is 12- h?

The value of rate constant for a first order reaction is 2.303 xx10^(-2) sec^(-1) . What will be time required to reduce the concentration to (1)/(10) th of its initial concentration ?