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Unit Test - Question 9 | 25-26 KCS18 Chemistry IC | Revolt

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Answers 25-26 KCS18 Chemistry IC Unit TestQuestion 9

9

QuizMultiple Choice

Unit Test

Question 9 of 15 • *25-26 KCS18 Chemistry IC

A sample contains 25% parent isotope and 75% daughter isotopes. If the half-life of the parent isotope is 72 years, how old is the sample?

Answer

A

144 years old

B

216 years old

C

288 years old

D

360 years old

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