Recent content by yan__90

A stands for concentration. this is my solution: k = 0.693 / t = 0.693 / (5730x365x24x60) = 2.301 x 10 ^ -10 [A] = [Ao]exp(-kt) 15.3 = 7 exp(-2.301 x 10 ^-10 t) t = 6465.5 years is it correct?

Homework Statement half life of carbon 14 is 5730 years. living matter produces 15.3 disintegrations per min per gram of carbon it contains. A 1g sample of a plant from an excavation shows 7 disintegrations per min from carbon-14. how long did the plant die? Homework Equations k = 1/ t...