A radioactive isotope has a half-life of 10 minutes.
At the start of an experiment, the activi...
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Chemistry, 24.05.2020 17:57 libertycooper
A radioactive isotope has a half-life of 10 minutes.
At the start of an experiment, the activity of a sample of this isotope was 800 counts
per second after allowing for background radiation.
Calculate how long it would be before the activity fell from 800 counts per second to
200 counts per second.
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