donotreply1 donotreply1
  • 30-11-2017
  • Chemistry
contestada

A radioactive isotope has a half-life of 1.3 billion years. After 3.9 billion years how much of the parent material will be left?

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cutelion918
cutelion918 cutelion918
  • 30-11-2017
Hey there!

1/8 will be left of the parent material

Hope this helps!
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