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.
Having an equal net income and outcome would result in a lack of profit thus making it attainable but not desireable
Check your surroundings to make sure its okay to move forward
Explanation:
I took drivers ed so its somewere close to my answer but it might not be spot on
