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Mathematics, 30.11.2019 06:31 skywil8981

Acertain element has a half life of 4.5 billion years. a. you find a rock containing a mixture of the element and lead. you determine that 15% of the original element remains; the other 85% decayed into lead. how old is the rock? b. analysis of another rock shows that it contains 55% of its original element; the other 45% decayed into lead. how old is the rock?

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Acertain element has a half life of 4.5 billion years. a. you find a rock containing a mixture of th...

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