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A 200 g sample is tested after a decay period and 50 g of 1-131 is present. How long is the decay period?
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A 200 g sample is tested after a decay period and 50 g of 1-131 is present. How

long is the decay period?

User Dickon Reed
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1 Answer

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Answer: I believe it is 12.5 g. I could be wrong though.

User MrRoy
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