11) The half-life of technetium-99 is 6.0 hours. How much of a 25.0 mg sample will remain after 24 hours? A) 12.5 mg B) 1.56 mg C) 3.12 mg D) 25.0 mg E) 6.25 mg
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Since the half-life of technetium-99 is 6 hours, we divide 24 by 6 to get 4 half-lives. Show more…
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