Question 1028970
Hi there,
A = Ao e^kt
Starting wit 10 kg
Activity drops to half in 12 hours
5 = 10 e^k12
5/10 = e^12k
0.5 = e^12k
loge0.5 = 12k loge e (loge e = 1)
k = loge 0.5/12
k = -0.06
Hope this helps :-)