Homework Sourse1 A certain radioactive isotope of uranium has a halflife of
(1) A certain radioactive isotope of uranium has a half-life of 20 days
(A)
Determine the decay consumer for this isotope. [ hint !!! Remembered that the decay constant has a unit of measure ]
(B)
What percentage of the original sample of this isotope will be percent after 50 days?
(A)
Determine the decay consumer for this isotope. [ hint !!! Remembered that the decay constant has a unit of measure ]
(B)
What percentage of the original sample of this isotope will be percent after 50 days?
Solution
Half life = 20 days A)Decay consumer = ln2/20 = 0.0465 days^-1 B) After 50 days, x = x0(1-e^(-kt)) = 0.177x0 % = 17.7%
