Nick Sinai
New member
24.Cobalt-64 decays by a first order process by the emission of a beta particle. The Co-64 isotope has a half-life of 7.8 minutes. How long will it take for 15/16 of the cobalt to undergo decay?
(A)7.8 min(C)23.4 min
(B)15.6 min(D)31.2 min
(A)7.8 min(C)23.4 min
(B)15.6 min(D)31.2 min