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Chemistry, 22.11.2021 14:00 kellynadine02

What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope remains unchanged after 11.46 days? a. 2.87 d
b. 3.82 d
c. 11.46 d
d. 34.38 d

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What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope...
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