Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mmoyer

  • 3 years ago

Carbon-14 has a half-life of approximately 5,730 years. How many half-lives have occurred in a sample that contains 50 percent of the original amount of the parent isotope?

  • This Question is Closed
  1. gavlois1
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    A half life is the amount of time it takes for something to decrease by half of its original amount. If it starts at 100%, undergoing one half life would leave it with 50%, 2 half lives with 25% and so on. So if there is 50% left, then it has undergone 1 half life.

  2. mmoyer
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A potassium isotope has a half-life of 1.25 billion years. Given that scientists estimate Earth's age to be 4.6 billion years, what is the most likely percentage of parent to daughter isotopes of this element currently existing on Earth?

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy