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PLEASE HELP!!! Iodine 131 has a half-life of about 8 days. How long will it take for the radiation of the isotope to go from 100 g to 12.5 g?

PLEASE HELP!!! Iodine 131 has a half-life of about 8 days. How long will it take for the radiation of the isotope to go from 100 g to 12.5 g?
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PLEASE HELP!!! Iodine 131 has a half-life of about 8 days. How long will it take for the radiation of the isotope to go from 100 g to 12.5 g?

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User Tarikki
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Answer:

After four half lives or 32 years, only 12.5 grams will be left.

Hope it helps :)

PLEASE HELP!!! Iodine 131 has a half-life of about 8 days. How long will it take for-example-1
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User Histrio
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