Determind the age of a rock that contains 31.3mg of 238U and 2.77mg of 206Pb. (t1/2...

Question

Question

Determind the age of a rock that contains 31.3mg of ²³⁸U and 2.77mg of ²⁰⁶Pb. (t_1/2 of ²³⁸U=4.51 x 10⁹ yr) Enter answer in scientific notation.

Answer 1

Answer #1

Decay constant, a = = = 1.536 x 10 yr! D.693 tie 0.693 4.51 X 10% yn 0.0134 mmot Moles of Pb-206 = 2.77 mg = 206 gimol Moles

Answer 2

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