You have 300,000 atoms of a radioactive substance. After 3 half-lives have past, how many atoms remain? Remember that you cannot have a fraction of an atom, so round the answer to the nearest whole number.
1 answer:
The number of atoms that remains after 3 half-lives given that it was originally 300000 atoms is 37500 atoms
<h3>Data obtained from the question</h3>
Original amount (N₀) = 300000 atoms Number of half-lives (n) = 3 Amount remaining (N) =?
<h3>How to determine the amount remaining</h3>
The amount remaining after 3 half-lives can be obtained as illustrated below:
N = N₀ / 2ⁿ
N = 300000 / 2³
N = 300000 / 8
N = 3 7 5 0 0 atoms
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