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1 December, 20:43

The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 4000 years? ... ?

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  1. 1 December, 21:05
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    The half-life equation is written as:

    An = Aoe^-kt

    We use this equation for the solution. We do as follows:

    0.5 = e^-k (1590)

    k = 0.00044

    An = 300oe^-0.0004 (4000)

    An = 52.46 mg will remain after 4000 years

    Hope this answers the question. Have a nice day.
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