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26 April, 04:59

If a material has a half-life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/4 its original amount?1. 48 hours2. 24 hours3. 72 hours4. 12 hours5. practically forever, but it may be safe by then

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  1. 26 April, 05:01
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    48 hrs

    Explanation:

    If the original mass was x g

    Then after 24 hours the mass remaining will be x / 2

    After another 24 hours the mass remaining will be x/4 which is 1/4 of its original mass
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