The half-life of a radioactive kind of tellurium is 40 minutes. How much will be left after 240 minutes if we started with 576 g
rams of it?
1 answer:
Answer:
That is probably tellurium 134 which has a half-life of 41.8 minutes but we'll stick with the 40 minutes you stated.
240 / 40 minutes equals precisely 6 half-lives.
Every half-life reduces a radioactive substance by one half.
So 6 half-lives reduces it by 1 / (2^6) which equals 0.015625
576 * .015625 = 9 grams exactly.
Step-by-step explanation:
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