Oh hey there ain’t nothing lol I swear to my sister in my house and my mom and I are so scared of it all over there so we. Yea
Answer:
hope this helps its like an outline of what you should do
Explanation:
Yes you are right have a great day
If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.
Thus, A would be the correct answer choice here.