alansantos704 alansantos704
  • 08-08-2019
  • Mathematics
contestada

you find a rock containing a mixture of element and lead. you determine that 20% of the orignial element remain; the other 80% decayed into leads.how old is the rock?

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lucas9762 lucas9762
  • 08-08-2019

100 years I think that's it

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