Element 104 was produced at Oak Ridge National Laboratory. Only 3000 atoms were created with a half-life of 4.5 seconds. How many atoms were left after 9.0 seconds?
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Expert's answer
2017-05-17T09:48:09-0400
The half life is the amount of time it takes for half of the atoms in a sample to decay. Therefore, in 4.5 seconds 3000/2 = 1500 atoms will remain. In 9 seconds 1500/2 = 750 atoms will remain.
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