Question

You have a 9.8 mol pure sample of an unknown material. After 1.3 h, you discover that 22% has decayed. Determine the half-life, decay constant, mean life, & initial decay rate. Also determine what the decay rate is at 1.3 h.
T_1/2 =
λ = ________ h^-1
τ =
R_o = __________ decays/h
R = __________ decays/h

The decay rate of a radioactive source decreases by 70.6% in 6 h. Determine the half-life, decay constant, & mean life of the source.
T_1/2 =
λ = _________ h^-1
τ =

Answer 1

Thank you.