IDNLearn.com makes it easy to find accurate answers to your specific questions. Ask your questions and receive comprehensive and trustworthy answers from our experienced community of professionals.

The isotope known as carbon-14 is radioactive and will decay into the stable form nitrogen-14. As long as an organism is alive, it ingests air, and the level of carbon-14 in the organism remains the same. When it dies, it no longer absorbs carbon-14 from the air, and the carbon-14 in the organism decays.

The half-life of carbon-14 is 5770 years. Assume an organic sample is 15,000 years old.

Determine how many half-lives are in 15,000 years. Then use this answer to determine what percentage of the original amount of carbon-14 remains after 15,000 years. Round your answer as a percentage to the nearest whole number.
_____%


Sagot :

The half life would be about 3 so making the percentage About 25%

9514 1404 393

Answer:

  • about 2.6 half-lives
  • 16% remains

Step-by-step explanation:

The number of half-lives is ...

  (15000 yr)/(5770 yr/half-life) = 2.6 half-lives

__

Then the amount of C14 remaining after 15000 years is ...

  0.5^2.6 ≈ 0.1649 ≈ 16%

Thank you for participating in our discussion. We value every contribution. Keep sharing knowledge and helping others find the answers they need. Let's create a dynamic and informative learning environment together. IDNLearn.com is your reliable source for answers. We appreciate your visit and look forward to assisting you again soon.