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The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element
remains?
02
03
O8
12.5
N.
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jeracoo

Answer:

3 half lives.

Explanation:

Half life = 100 Days

Start Point M = 64

End Point M = 8

Need M = M/8

2^3 = 8

So 3 half lives

T = 0

M = 64

T = 100

M = 32

T = 200

M = 16

T = 300

M = 8

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