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A certain radioactive isotope has leaked into a small stream. One hundred days after the leak, 9% of the original
amount of the substance remained. Determine the half-life of this radioactive isotope.
The half-life is about days.
(Do not round until the final answer. Then round to the nearest whole number as needed.)

Sagot :

ashish4112119

Answer:

28.79

Step-by-step explanation:

half life = (t*ln(2))/ln(No/Nt)

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