Rock B was found to contain 6 atoms of a parent isotope and 94 atoms of its daughter isotope. If the half-life of the parent- daughter isotope pair is 2 million years, what is the absolute age of Rock B?

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Rock B was found to contain 6 atoms of a parent isotope and 94
atoms of its daughter isotope. If the half-life of the parent-
daughter isotope pair is 2 million years, what is the absolute age
of Rock B?
Parent atoms remaining
100
94 atoms
87 atoms
80
75 atoms
60
50 atoms
40
25 atoms
13 atoms
6 atoms
1
2
3
4
Number of half-lives
(Elapsed time)
2 million years old
4 million years old
6 million
years
old
8 million years old
94 million years old
LO
20
Number of atoms (percent)
Transcribed Image Text:Rock B was found to contain 6 atoms of a parent isotope and 94 atoms of its daughter isotope. If the half-life of the parent- daughter isotope pair is 2 million years, what is the absolute age of Rock B? Parent atoms remaining 100 94 atoms 87 atoms 80 75 atoms 60 50 atoms 40 25 atoms 13 atoms 6 atoms 1 2 3 4 Number of half-lives (Elapsed time) 2 million years old 4 million years old 6 million years old 8 million years old 94 million years old LO 20 Number of atoms (percent)
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