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12 June, 04:50

If you started with 1000 units of a radioactive element that has a half-life of 2,500 years, how many half-lives will the material have gone through in 7500 years? (Show work and explain answer).

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  1. 12 June, 05:03
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    Either 1 because half the atoms can only decay once or 3 divide 7500 years by the amount of time it takes to reach a half life
  2. 12 June, 06:01
    0
    Well 1000*3=7500 so it would of gone through 3 half-lives
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