The half-life of phosphorus-32 is 143 days if you begin
The half-life of phosphorus-32 is 14.3 days. If you begin with 41.1 mg of this isotope, what mass remains after 42.2 days have passed?
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the half-life of phosphorus-32 is 143 days if you begin with 411 mg of this isotope what mass remains after 422 days
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