Half life of `.^18F ` is 110 minutes.What fraction of `.^18F` sample decays in 20 minutes?

Half life of .^24Na is a900 minutes.What is its decay constant?

Half life of .^35S is87.8 D.What percentage of .^35S sample remians after 180 d?

65% of .^111In sample decays in 4.2 d.What is it half life?

The half-life period of a first order reaction is 10 minutes. Starting with initial concentration 12 M, the rate after 20 minutes is

Hydrolysis of cane sugar in presence of acid is a first order reaction with half life time of 4 hours what fraction of sucrose undergoes hydrolysis in 11 hrs ?

A 3//4 of the original amount of radioisotope decays in 60 minutes.What is its half life?