Question

The half-life of cobalt-60 is 10.47 minutes. How many milligrams of cobalt-60 remain after 104.7 minutes if you start with 10.0 mg?

Answer 1

Answer :T=n*t1/2

given t1/2=10.47min.

N₀=10.0 mg

∴n=T÷t1/2⇒104.7÷10=10

now, Nt =N₀(1/2)ⁿ

10*(1/2)¹⁰=1/1024 ans.

Explanation: it might help uhh........