anonymous
  • anonymous
There are 200 particles of a certain atom in a chamber. If you know that this atom has a half-life 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
Health Sciences
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Opcode
  • Opcode
C. about 100 Final Answer.
anonymous
  • anonymous
Assume 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
Opcode
  • Opcode
B. Sample B

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anonymous
  • anonymous
Out 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
anonymous
  • anonymous
i was thinking C
Opcode
  • Opcode
Sorry for the late response. I have frostbite on my finger :( The answer would be B. the lowest layer is oldest
anonymous
  • anonymous
ohh frostbite??
Opcode
  • Opcode
Frostbite: Injury to body tissues caused by exposure to extreme cold, often resulting in gangrene.
anonymous
  • anonymous
OMG ur smart
anonymous
  • anonymous
The largest subdivisions are ___________. A. eons B. epochs C. eras D. periods
Opcode
  • Opcode
A. eons
anonymous
  • anonymous
thx

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