Strontium-90 is a radioactive isotope that is formed in nuclear explosions. The half-life of strontium-90 is 28 years. If a soil sample contains 35 pCi of
strontium-90 in 2000, what will be the activity of the Pºsr in this soil sample in 2084?
(Enter your answer to two significant figures.)
pCi
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Strontium-90 is a radioactive isotope that is formed in nuclear explosions. The half-life of stronti...
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