Gas phase thermal decomposition of di-tert-butyl peroxide is obeying first order kinetics. Total pressure at completion of the reaction is 360 torr and it is 240 torr after 10 minutes from start of the reaction, then rate of disappearance of after 30 min is : [in

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.