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1 January, 22:56

Americium-242 has a half-life of 6 hours. If you started with 24 g and you now have 3 g, how much time

has passed?

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Answers (1)
  1. 1 January, 23:16
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    How many times has it halved?

    24/2 = 12

    12/2 = 6

    6/2 = 3

    It halved three times.

    It halves once every 6 hours.

    18 hours have passed.
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