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Mathematics, 25.06.2020 07:01 bbb4951
every chemical element goes through natural exponential decay, which means that over time its atoms fall apart. the speed of each element's decay is described by its half-life, which is the amount of time it takes for the number of radioactive atoms of this element to be reduced by half. the half-life of the isotope beryllium-11 is 14 seconds. a sample of beryllium-11 was first measured to have 800 atoms. after t seconds, there were only 50 atoms of this isotope remaining.
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