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Advocard [28]
3 years ago
7

A certain element has a half life of 4.5 billion years. a. You find a rock containing a mixture of the element and lead. You det

ermine that 60​% of the original element​ remains; the other 40​% decayed into lead. How old is the​ rock? b. Analysis of another rock shows that it contains 5​% of its original​ element; the other 95​% decayed into lead. How old is the​ rock?
Mathematics
1 answer:
oee [108]3 years ago
7 0
The rock is about 7
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Step-by-step explanation:

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3 years ago
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