Earlier in the chapter, we learned that it was possible to calculate the concentration of a…


Earlier in the portion, we versed that it was practicable to calculate the tension of a radioactive symbolical N(t) from a simple equation of the frame. N(t) = Noe−λt where No is the current tension at term = 0. Part 1: Suppose that we would love to use this equation to venerate the sum of Uranium-238 that existed on the Earth 4.5 billion years ago—or encircling the term the Earth was rst frameed. If No 238 is the tension today, what was the tension of U-238 on the Earth 4.5 billion years ago? Part 2: Assuming that No 235 is the tension of U-235 today, what was the tension of U-235 on the Earth 4.5 billion years ago? Part 3: Based on the results of parts 1 and 2, what was the average natural “enrichment” of Uranium-235 in the uranium ore at the term (4.5 billion years ago)