eva60716 eva60716

11-10-2022
Chemistry

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A radioactive isotope of lead has a half-life of 10.6 hours.
A small sample of lead containing this isotope has a count rate of 8000 counts per minute.
How long will it be before the count rate is 1000 counts per minute?
Time =
hours
(2)
(Total 2 marks)

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