Question

5. The half-life of a radioactive substance is 500 years. If there is 13 grams initially, how much material will remain after 800 years?

Answer 1

4.2884007100119

Explanation:

remaining amount = inital amount * (1/2)^(time elapsed/half life)

13 (1/2)^(800/500) = 4.2884007100119