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1/8 amount of the element will reamain.

After 1 half-life there is 1/2 left

After the 2nd half-life there is 1/2 of 1/2 left which is 1/4

After the 3rd half-life there is 1/2 of 1/4 left which is 1/8

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Q: What approximate amount of the element remains after 3 half-lives have elapsed?
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Forensic anthropology is the examination of skeletal remains. A forensic anthropologist can first determine if the remains are in fact human. Then he can determine the gender, approximate age, physical stature, their occupation, and likely racial affiliation of the person in life. He can also estimate approximate time since death, likely cause of death and any identifying illnesses or wounds suffered in life that could leave traces in the bone structure.


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