the abundanceof 235U is 0.715and the abundanceof 238is 99.28% what is the average atomic massof uranium?
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The Average atomic mass of uranium is obtained by using the following formula: Average atomic mass = ∑ mass of isotope × Percent abundance. Average atomic mass = 234 ×0.01/100 + 235 ×0.71/100 + 238 ×99.28/100.Average atomic mass = 0.0234 amu + 1.6685 amu + 236.2864 amu.Average atomic mass = 237.9783 amu.The Average atomic mass of the uranium is 237.9783 amu.
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