Given that the half-life of the 235U-to-207Pb decay series is 704 million years, how long ago was a.
Given that the half-life of the 235U-to-207Pb decay series is 704 million years, how long ago was a zircon crystal formed if 1.0 g of the crystal contains 4.32 ng of 235U and 1.92 ng of 207Pb? What is the mass of a univalent ion if it acquired a velocity of 5.5 × 105 m/s when accelerated across a potential of 1,250 V? Dec 08 2021 01:39 PM
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