Ask Question
11 December, 21:43

This exercise uses the radioactive decay model.

A wooden artifact from an ancient tomb contains 80% of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)

I need the answer in yrs ...?

+4
Answers (1)
  1. 12 December, 01:02
    0
    For radioactive decay, we can relate current amount, initial amount, decay constant and time using:

    N = No x exp (-λt)

    Half-life = ln (2) / λ

    λ = ln (2) / 5730

    N/No = 80% = 0.8

    0.8 = exp (-ln (2) / 5730 x t)

    t = 1844 years
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “This exercise uses the radioactive decay model. A wooden artifact from an ancient tomb contains 80% of the carbon-14 that is present in ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers