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Suppose you have 173.00 g of naturally occurring Uranium (a) How many moles of uranium do you have? The fraction of these atoms of each isotope is also listed. How many moles of 238U and 235U do you have? Ignore 234u n(U) = Your response differs from the correct answer by more than 10%. Double check your calculations n(235) = Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully n(238) = (b) Find the decay rate λ for each of the two isotopes, in inverse Gyr 235 = Gyr 238 = (c) The Earth is approximately 4.54 Gyr old. Based on this number, determine the number of moles of 235u and 238U in your sample when the Earth was born no(235) = no(238) - (d) Determine the fractional abundance of 235U and 238U at this time. Continue to ignore 234U f(235) - f(238)-
Suppose you have 173.00 g of naturally occurring Uranium (a) How many moles of uranium do you have? The fraction of these atoms of each isotope is also listed. How many moles of 238U and 235U do you have? Ignore 234u n(U) = Your response differs from the correct answer by more than 10%. Double check your calculations n(235) = Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully n(238) = (b) Find the decay rate λ for each of the two isotopes, in inverse Gyr 235 = Gyr 238 = (c) The Earth is approximately 4.54 Gyr old. Based on this number, determine the number of moles of 235u and 238U in your sample when the Earth was born no(235) = no(238) - (d) Determine the fractional abundance of 235U and 238U at this time. Continue to ignore 234U f(235) - f(238)-
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