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What fraction will remain after 84 years if strontium-90 is accidentally released into the environment
[From: ][author: ][Date: 11-05-09][Hit: ]
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Strontium-90 (t 1/2 is approximately 28 years) is a nuclear fission product that tends to concentrate in bones and milk
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84/28 = 3 half lives
(1/2)^3 = 1/8 of it remains
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