Respuesta :
1 half-life - 4.5 days
x half-lives - 27 days
x=(1*27)/4.5=6
6 half-lives have elapsed after 27 days.
x half-lives - 27 days
x=(1*27)/4.5=6
6 half-lives have elapsed after 27 days.
Answer: The number of half lives are 6
Explanation:
We are given:
Half life of a radioactive isotope = 4.5 days
Calculating the number of half lives after time has elapsed 27 days:
4.5 days have been elapsed time after 1 half life
So, 27 days must have been elapsed after = [tex]\frac{1}{4.5}\times 27=6[/tex] half lives
Hence, the number of half lives are 6
