amount = 400(1/2)^(t/11.43), where t is number of days.
so if t = 6
amount = 400(1/2)^(6/11.43)
= 277.996
or appr 278 mg
The half-life of Radium-223 is 11.43 days. If a sample has a mass of 400 mg, find the mass (in mg) that remains after 6 days
1 answer