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d1i1m1o1n [39]
4 years ago
13

Radioactive isotope has a half-life of 1.2 billion years. as measured by the presence of the isotope and its stable decay produc

t, a rock originally contained 10 grams of the radioactive isotope, and now contains 1.25 grams. approximately how many years old is the rock?
Chemistry
1 answer:
Virty [35]4 years ago
6 0
The radioactive isotope is 15 years old
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