The half life of Radon is 3.8 days. Calculate how much of 15 milligram of Radon will remain after 38 days.

Explanation

The number of half-lives in 38 days is given by `n=38/3.8`=10
`N=N_0(1/2)^n`
`N=15(1/2)^10`
Solving we get, N=0.014 mg