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OpenStudy (anonymous):
The half-life of a radioactive substance is 5 days. The substance originally contained 230 grams. How long will it take for the substance to weigh 23 grams? A. 0.5 days B. 16.6 days C. 0.644 days D. 11 days
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OpenStudy (anonymous):
16.6
OpenStudy (anonymous):
Thank you!
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