Question

A sample contains two radioactive nuclei x and y with half lives

Answer 1

Answer:

Explanation:

A sample contains two radioactive nuclie x and y with half-lives 2 hour and 1 hour respectively. The nucleus x-decays to y and y-decays into a stable nucelus z.At t = 0, the activates of the components in the same were equal. Find the ratio of the number of the active , nuclei of y at t=4 hours to the number at t=0.