(1/2)^ 6 = 1/64
so we are talking six half lives for A is 12 hours
so one half life for A is 2 hours
Now I will read the problem :)
well half life of B is 3 hours
1/32 = 5 half lives
5 * 3 = 15 hours
Not hard, just keep your wits about you and think ! (and check my arithmetic :)
isotope A require 12h for its decay rate to fall to 1/64 of its intial value . isotope B has half-life = 1.5 half life of A
how long does it take for decay rate of B fall to 1/32 of its initial value ?
1 answer