Geography, 16.12.2020 16:10 pattyv9845
If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half lives have passed?
a. 0.5 half lives.
b. 1 half life.
c. 2 half lives.
d. 0.25 half lives.
Answers: 1
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If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half lives have...
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