Carbon14 has a half life of 5730 yrs. This is the only information i am given. Caluculate the decay constant of Carbon 14. This is what I have done. dN/dt = -lambda(N) I know the Avogadro Constant is equal to 6x10^23 So i am using 1kg in my formula. 14C = 6 x 10^23 x 1000/14 where do i go from here??