embercorum embercorum
  • 08-02-2024
  • Chemistry
contestada

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock contains 72.3% of the amount of uranium-238 that it contained when it was formed. How old is the rock?

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