3emmanelson 3emmanelson
  • 03-05-2018
  • Chemistry
contestada

An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. Only 2.5 g of this isotope is now left. What is its half-life?

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diazpat004 diazpat004
  • 03-05-2018
1.25, you divide 2.5 by 80, then times by 40
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Emilani730
Emilani730 Emilani730
  • 17-12-2018

the answer on edg is 8 days

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