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Be sure to answer all parts. Determine the age of rock that contains 23.2 mg of 238 U and 2.29 mg of 206 Pb. (t 12 of 238 U 4.51 x 109 yr). Enter your answer in scientific notation. x10 yr
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eepb and thea iite daleemia the 238 238 238 y do the a 2 { : 54 x 10-10 lyus. ensDATE de final 238 ス3.2 35 845 10 yrd I-t

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