Answered: The decay of 238U to 206 Pb has a half… | bartleby

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The decay of 238U to 206 Pb has a half life of 4.46 Giga-years (billions of years, Gy). A
rock is found to contain 4.06 mg of 238U and 2.32 mg of 206 Pb. Assuming that the
rock contained no lead at the time of formation, determine the age of the rock in units
of Giga-years (billions of years, Gy) to an accuracy of 1 decimal place.

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