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18 October, 10:45

The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 190 grams of a radioactive isotope, how much will be left after 3 half-lives?

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  1. 18 October, 12:35
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    23.75

    Step-by-step explanation:

    190/2=95

    95/2=47.5

    47.5/2=23.75
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