Chemistry
Chemistry, 27.10.2021 21:05, jdavis2310

Since the half-life of 235U (7. 13 x 108 years) is less than that of 238U (4.51 x 109 years), the isotopic abundance of 235U has been steadily decreasing since the earth was fonned about 4.5 billion years ago. How long ago was the isotopic abundance of 235U equal to 3.0 a/o, the enrichment of the uranium used in many nuclear power plants?

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Since the half-life of 235U (7. 13 x 108 years) is less than that of 238U (4.51 x 109 years), the is...

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