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If you obtained a sample of martian rock,determined the abundances of ²³⁸U and ²⁰⁷Pb in it,and found that for every one uranium atom there were seven lead atoms,then what would the age of this rock be? Note that ²³⁸U decays to ²⁰⁷Pb with a half-life of 700 million years.Assume that there was no ²⁰⁷Pb in the rock when it originally formed.
Pesos
The currency unit of several countries in Latin America and the Philippines.
Bolivars
The currency of Venezuela, used as a medium of exchange within the country.
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