Answer: We can calculate it with the radioactive half life equation
Explanation:
If we already know the initial amount of radioactive material and its half life, we can leave that material for a specific known time and then measure how much of the material is left (since it follows the radioactive deacay) and use the results in the following formula:
[tex]A=A_{o}.2^{\frac{-t}{h}}[/tex]
Where:
[tex]A[/tex] is the final amount of the material
[tex]A_{o}[/tex] is the initial amount of the material
[tex]t[/tex] is the time elapsed
[tex]h[/tex] is the half life of the radioactive compound
