Question: Element A has two isotopes. The first isotope is present 12.84% of the time and has a mass of 220.23. The second isotope has a

Element A has two isotopes. The first isotope is present 12.84% of the time and has a mass of 220.23. The second isotope has a mass of 194.69. Calculate the atomic mass of element A. (To two decimals places)

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