t first order reaction 80% reaction complete in 60 minute, What is `t_(1/2)` of reaction

If first order reaction 80% reaction complete in 60 minute, What is t_(1/2) of reaction

50 % of first order reaction gets completed in 16 minutes. What fraction of the reaction would occur in 32 minutes :

80% of a first order reaction was completed in 70 min. What is the half life of the reaction?

For a first order reaction 75% reaction complete in 90 min. for the same reaction 60% complete in what time?

For a first order reaction 75% reaction complete in 90 min. for the same reaction 60% complete in what time?

A first order reaction is 40% complete in 50 minutes. In what time will the reaction be 80% compelete ?

A first order reaction is 15% complete in 20 minutes. In what time will the reaction 60% complete ?