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Teachers Notes: A good Web site for review of nuclear chemistry.
Problem 1:27Co59 + 0n1 → 27Co60
Problem 2:27Co60 → 28Ni60 + -1e0 + 0γ0
Problem 3: number of half-lifes (n) = 26.4/5.27 = 5.01 half-lives
Amount remaining = (initial amount)(1/2)n Amount remaining = (100.0g)(1/2)5.01=3.10 g remaining
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