A community for students.
Here's the question you clicked on:
 0 viewing
Reaper534
 2 years ago
There are 200 particles of a certain atom in a chamber. If you know that this atom has a halflife of 4 minutes, how many particles will still be radioactive after 4 minutes? Select the best answer
A. about 25
B. about 50
C. about 100
D. about 200
Reaper534
 2 years ago
There are 200 particles of a certain atom in a chamber. If you know that this atom has a halflife of 4 minutes, how many particles will still be radioactive after 4 minutes? Select the best answer A. about 25 B. about 50 C. about 100 D. about 200

This Question is Closed

Opcode
 2 years ago
Best ResponseYou've already chosen the best response.1C. about 100 Final Answer.

Reaper534
 2 years ago
Best ResponseYou've already chosen the best response.0Assume you have two radioactive samples (each has the same number of particles). You leave both samples sitting overnight. In the morning, Sample A has no radioactive particles remaining, while Sample B is still noticeably radioactive. This experiment is done many times with the same result. Which sample has a longer half life? A. Sample A B. Sample B C. More information is needed D. Both have the same half life

Reaper534
 2 years ago
Best ResponseYou've already chosen the best response.0Out of 5 undisturbed horizontal beds of sedimentary rock, we can say that _______________. A. the top layer is oldest B. the lowest layer is oldest C. there is no way of knowing which is oldest D. the 2nd and 3rd are younger than the top layer. 2 more

Opcode
 2 years ago
Best ResponseYou've already chosen the best response.1Sorry for the late response. I have frostbite on my finger :( The answer would be B. the lowest layer is oldest

Opcode
 2 years ago
Best ResponseYou've already chosen the best response.1Frostbite: Injury to body tissues caused by exposure to extreme cold, often resulting in gangrene.

Reaper534
 2 years ago
Best ResponseYou've already chosen the best response.0The largest subdivisions are ___________. A. eons B. epochs C. eras D. periods
Ask your own question
Sign UpFind 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
 Engagement 19 Mad Hatter
 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.