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7 November, 10:13

A 32 gram radioactive sample has a half-life of 2 days how much of the original sample remains after 6 days

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  1. 7 November, 14:02
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    First, we will get the "n", the number of half lives, it is the elapsed time over the half life. In the problem, the time is measured in days, so we have

    6/2 = 3

    to get the ending amount of radioactive sample, we have

    32g x (1/2) ³ = 4 grams of radioactive sample ⇒ the amount left after 6 days
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