Chemistry

Chemistry

Problem

A sample of pitch blende is found to contain 50% uranium and 2.425% lead. Of this lead only 93% was Pb206\text{Pb}^{206} isotope. If the disintegration constant is 1.52×10−10 yr−11.52 \times 10^{-10} \text{ yr}^{-1}, how old could be the pitch blende deposits?

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