At the time of the Oklo fission reaction, the actual amount of U-235 present was a
Chapter 38, Problem 80(choose chapter or problem)
At the time of the Oklo fission reaction, the actual amount of U-235 present was a. about the same as today. b. about twice as much as today. c. about four times as much as today. d. about eight times as much as today.
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