The ages of rocks can be determined using the isotope 135cs, which undergoes beta decay with a half-life of 2. 3×106 y. A rock sample contains a ratio of 135ba to 135cs of 0. 15. Given that 135ba is a stable product of the beta decay of 135cs, and assuming there was originally no 135ba present in the rocks, calculate the age of the rock sample.
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The ages of rocks can be determined using the isotope 135cs, which undergoes beta decay with a half-...
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