LILUU5P+ PL 4. 19,9924 AMU is the mass of one of the three isotopes of neon...

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Answer 1

Answer #1

average atomic mass = some of atomic mass x natural abundance

average atomic mass = (19.9924 x 90.4838 / 100) + (20.9940 x 0.2696/100) + (21.9914 x 9.2465/100)

average atomic mass = 18.0899 + 0.0566 + 4.8362

average atomic mass = 22.9827 amu

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Answer 2

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