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Cerium-144 is a radioactive isotope with a half-life of 285 days. How lonh would it take for an initial sample of 10 grams of Cerium-144 to decay until only 1 gram remains?

a. about 2850 days

b. about 513 days

c. about 947 days

d. about 855 days

User Sakthig
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1 Answer

4 votes

The answer should be C, about 947 days.

User Maverick Meerkat
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