Answer to Question #275353 in General Chemistry for Renee

General Chemistry

Question #275353

If 200.0 g of an isotope decays to 25.0 g in 24.0 seconds, what is the half-life of this isotope?

Expert's answer

In 24.0 seconds the mass of an isotope halves 3 times. Therefore, its half-life is 24/3=8 seconds.

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