Question

What is the age of rock if nuclidic ration of pb and u is 0.6?

Answer 1

How old is the rock (given that the half-life of U-238 is 4.5 billion years)? Since the ratio of P/D is given as 4/1 we can assume that the original amount of P is 4+1 = 5 and that, over time, only 4 is left. The equation usually used to determine the age of a rock is the following version of first order kinetics.

Answer 2

$\boxed{Heya\:mate}$

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⭕Since the ratio of P/D is given as 4/1 we can assume that the original amount of P is 4+1 = 5 and that, over time, only 4 is left.

⭕The equation usually used to determine the age of a rock is the following version of first order kinetics