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apich apich
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6 years ago

After three half-lives, a radioactive element will have ____ of its original parent atoms.
  a. 1/2
  b. 1/6
  c. 1/3
  d. 1/8
  e. 1/32

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asapchiggaasapchigga
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6 years ago
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apich Author
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6 years ago
Smart ... Thanks!
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Thanks
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2 hours ago
Brilliant
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