203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of a method for determining the ages of rocks. A sample of rock contains 122.0 μg^87 Rb and 6.1 μg^87 Sr . What is the age of the rock? The half-life of rubidium-87 is 4.8x10^10 y. There was no strontium-87 in the rock initially. Age =  y

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Chapter21: Chemistry Of The Main-group Elements
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203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of a method for determining the ages of rocks. A sample of rock contains 122.0 μg^87 Rb and 6.1 μg^87 Sr . What is the age of the rock? The half-life of rubidium-87 is 4.8x10^10 y. There was no strontium-87 in the rock initially.

Age =  y

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