Problem: Element A has two isotopes. The first isotope is present 5.15% of the time and has a mass of 243.39. The second isotope has a mass of 1845. Calculate the atomic mass of element A.

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Element A has two isotopes. The first isotope is present 5.15% of the time and has a mass of 243.39. The second isotope has a mass of 1845. Calculate the atomic mass of element A.

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