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24 March, 08:34

If 250 mg of a radioactive element decays to 180 mg in 24 hours, find the half-life of the element.

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  1. 24 March, 08:49
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    250mg/2=125m

    180mg/24hrs=45mg/6hrs=15mg/2hrs

    125/15=8 ⅓

    8 ⅓ * 2 = 25/3 * 2=50/3 hrs
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