An element X has two isotopes. The mass for the first isotop…

Questions

An element X hаs twо isоtоpes. The mаss for the first isotope is 58.07 аmu, and 60.33 amu for the second isotope. The average atomic mass for this element is 58.64 amu. What is the natural abundance of the first isotope? (Round your answer to 2 decimal places. If your answer is "26.15%", put in "26.15".)

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