maynardzachary2007 maynardzachary2007
  • 25-11-2022
  • Chemistry
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21. If the half-life of an isotope is 60 seconds, how long will it take for a 1 kg sample to decay to less than 10 g.
a. About 60 half-lives
b. Exactly 100 half-lives
C. About 7 minutes
d. Exactly 60 seconds
e. About 60,000 seconds

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