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OpenStudy (anonymous):
The half lie of randon-222 is 3.8 days. How much of a 100g sample is left after 15.2 days?
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OpenStudy (agl202):
15.2 days = 15.2/3.8 = 4 half days Then leftover = 100 grams * (0.5)^4 = 6.25 grams
OpenStudy (isaiah.feynman):
OpenStudy (isaiah.feynman):
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