a. Radioactive decay follows first - order kinetics. The initial amount of two radioactive elements X and Y is 1 gm each. What will be the ratio of X and Y after two days if their halflives are 12 hours and 16 hours respectively? b. The hypothetical reaction P + Q R is half order w.r.t ‘P’ and zero order w.r.t ‘Q’. What is the unit of rate constant for this reaction?
