20% first order reaction is completed in "50" minutes.Time required for the completion of 60% of the reaction is

A first order reaction completes 60% 20 minutes. The time required for the completion of 90% of the reaction is approx………..

A first order reaction is half completed in 45 minutes.The time required to complete 99.9% of the reaction

A First order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for the same reaction is

A first order reaction is 20% complete in 10 minutes. Calculate the time for the completion of 75% of the reaction.

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

A first order reaction is 40% completed in 50 minutes. What is the time required for 90% of the reaction to complete?