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a a Uranium-235 has a half-life of 700 million years. The current abundance of this nuclide found in nature is 0.71%. Ca
Posted: Mon May 02, 2022 4:44 pm
by answerhappygod
- A A Uranium 235 Has A Half Life Of 700 Million Years The Current Abundance Of This Nuclide Found In Nature Is 0 71 Ca 1 (107.46 KiB) Viewed 30 times
a a Uranium-235 has a half-life of 700 million years. The current abundance of this nuclide found in nature is 0.71%. Calculate how many billions (10%) of years ago the concentration of Uranium-235 was 5%. Describe a plausible scenario under which the uranium deposit at Oklo in Gabon, West Africa became a natural fission reactor. Assume this reactor started at the time the U-235 abundance was 5% and operated for 100 million years. If, after 100 million years of operation the U-235 abundance was reduced by 30% of its original value, what would be the current abundance of U-235 in the uranium deposits at Oklo?