Non-native fish escape into a river from aquaculture farms.
Wassup what’s wrong how is everything?
Answer:
North. I had a similar question to that just different names.
Explanation:
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.