a. what is the half life of a radioactive isotope if a 32.0g sample decays to...

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a. what is the half life of a radioactive isotope if a 32.0g sample decays to 24.6g after 127 days?

b. 76Kr has a half-life of 14.8 hours. How long will it take for 75% of the sample to decay?

science chemistry

Answer 1

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