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11) Calculate the atomic mass of element X , if it has 2 naturally occurring isotopes with the following masses and natural abundances: X45X4744.8776amu46.9443amu32.88%67.12%

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11) Calculate the atomic mass of element " X ", if it has 2 naturally occurring isotopes with the following masses and natural abundances: X45X4744.8776amu46.9443amu32.88%67.12% A) 46.26amu B) 46.84amu C) 46.34amu D) 45.91amu E) 44.99amu

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