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13 March, 11:01

If you have 200.0 g of radioisotope with a halflife of 5 days, how much isotope would remain after 15 days?

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  1. 13 March, 14:33
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    H=5 days

    A0=200.0 g

    t=15 days

    A=?

    A=A0 (1/2) ^t/h

    = 200.0 g (1/2) ^15/5

    =25 g remains
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