A radioactive sample produced 1.00 X 105 disintegrations min-1; 28 days later it produced only 0.25 X 105 disinte grations min-1. 1 day = 1440 min-1.
a. What is the half-life of the radioisotope?
b. How many radioactive atoms were there in the sample that had 1.00 X 105 disintegrations min-1?
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.