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A certain element has three naturally occurring isotopes. 78.70% of the atoms exist with a mass of 22.94, 10.03% exist with a mass of 24.88,

A certain element has three naturally occurring isotopes. 78.70% of the atoms exist with a mass of 22.94, 10.03% exist with a mass of 24.88, and 11.17% exist with a mass of 26.7. What is the average atomic mass of the element?

Your answer should be to two decimal places.

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