A) A radioactive material produces 1220 decays per minute at one time, and 4.2 h later...

Question

Question

A) A radioactive material produces 1220 decays per minute at one time, and 4.2 h later produces 150 decays per minute. What is its half-life?

B) What fraction of a sample of 6832Ge, whose half-life is about 9 months, will remain after 3.5 yr ?

C) What is the activity of a sample of 146C that contains 7.0×10²⁰ nuclei? The half-life of 146C is 5700 years.

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Answer 1

Answer #1

Answer 2

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