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March 25, 2017

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Radioactive radium () has a half-life of 1599 years. What percent of a given amount will remain after years?

  • Calc - ,

    radio active radium(226)

  • Calc - ,

    Let P be the initial amount
    n be the years
    A the amount remaining after n years

    A = P*(1/2)^(n/1599)
    A/P = (1/2)^(n/1599)
    so, the % remaining is
    100*(1/2)^(n/1599)

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