The half life of radium is 1590 yrs. how long will it take to 1 gm of element to loose 0.1gm. full solution please.
First, calculate k.
k = 0.692/t1/2
Substitute k into the below equation.
ln(No/N) = kt
No = 1 g
N = 0.9 g
k from above.
Solve for T in years.
Post your work if you get stuck.