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18 January, 22:51

Sodium-24 has a half-life of 15 hours. how much sodium-24 will you have after 60 hours of your original sample is 64 mg

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  1. 19 January, 01:23
    0
    16mg.

    15x=60 solve for x and you get x=4

    now divide 64/4 because that is how many half lives occurred and you will be left with 16mg.
  2. 19 January, 01:28
    0
    Here's what I came up with

    k = -.0462

    A = 4mg
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