A first order reaction takes 40 min for 30% decomposition. Calculate t_1/2.

During nuclear explosion, one of the products is ⁹⁰Sr with half-life of 28.1 years. If 1μg of ⁹⁰Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.

For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.

For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained.

Calculate the rate constant.

The following data were obtained during the first order thermal decomposition of SO₂Cl₂ at a constant volume.

SO₂Cl_2(g)→ SO_{2 (g)} + Cl_{2 (g)}

Calculate the rate of the reaction when total pressure is 0.65 atm