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24 January, 17:19

If you start with 64g of a radioactive element how many half-lives would occur before 8g remain?

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  1. 24 January, 20:04
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    3 half-lives

    Explanation:

    The half-life is the time that it takes to a radioactive element to decay to half of its initial amount.

    Let's suppose we start with 64 g of the radioactive element.

    After 1 half-life, the mass of the element will be 32 g. After 2 half-lives, the mass of the element will be 16 g. After 3 half-lives, the mass of the element will be 8 g.
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