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March 29, 2017

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cobalt-60 has a half-life of 5.26 years, how much of a 500 gram sample will be left after 21 years

  • physical science - ,

    500*'(1/2)^(21/5.26) grams

  • physical science - ,

    You have 14,000 atoms of radioisotope x, which has a half life of 1000 years how much of radioisotope x is after 9000 years ?

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