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Carbon-14 is a radioactive isotope of carbon with a half-life of 5,730 years. A paleontologist finds fossil that contains 25% of its original amount of carbon -14 atoms. How old is the fossil?

Respuesta :

Eduard22sly

The age of the fossil which contains the Carbon-14 radioactive isotope is 11460 years

How to determine the number of half-lives

  • Original amount (N₀) = 100%
  • Amount remaining (N) = 25%
  • Number of half-lives (n) =?

2ⁿ = N₀ / N

2ⁿ = 100 / 25

2ⁿ = 4

2ⁿ = 2²

n = 2

How to determine the age

  • Half-life (t½) = 5730 years
  • Number of half-lives (n) = 2
  • Time (t) =?

t = n × t½

t = 2 × 5730

t = 11460 years

Learn more about half life:

https://brainly.com/question/26374513

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