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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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riveraes riveraes
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6 years ago
The ratio of parent to daughter isotopes in a radioactive decay process is 0.40. How many half-lives have elapsed since the material was 100 parent atoms?
 
  A) less than l B) between l and 2 C) more than 3 D) between 2 and 3
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tysonrastysonras
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6 years ago
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riveraes Author
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6 years ago
Smart ... Thanks!
Liarec
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Yesterday
You make an excellent tutor!
noodlelicker
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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