k2912382 k2912382
  • 18-01-2017
  • Chemistry
contestada

1. If you have 25% radioactive parent atoms in a mineral crystal, and 75% daughter atoms, how many half-lives have passed?

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shailajohnson1
shailajohnson1 shailajohnson1
  • 18-01-2017
too freaking many... or maybe not many at all

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