Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

brianna0905

  • one year ago

A certain radioactive element has a half-life of one hour. If you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p.m.? 0.50 grams 0.25 grams 0.125 grams 0.0 grams

  • This Question is Closed
  1. chmvijay
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    what you think :)

  2. brianna0905
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i think its 0.25g im not to sure

  3. chmvijay
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yaaa ur right see at 12 Pm or noon 1 gram is there since 1 hr is half time where it get converted to half of initial value at 1pm = 1/2 =0.5 gram then at 2 pm 0.5/2 =0.25 gram ur right :)

  4. brianna0905
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh hmm thought so, thank you!!(:

  5. chmvijay
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yw:)

  6. asmagul
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it is 0.25 as time is 2 hours then there are two half lives.1?2=0.5......0.5/2=0.25

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

    Search OpenStudy
    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.