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26 May, 01:30

Neon has 2 isotopes. Neon-20 has a mass of 19:992 amu and neon-22 has a mass of 21 amu. In any sample of 100 neon

atoms, 90 will be neon-20 and 10 will be neon-22. Calculate

the average atomic mass.

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Answers (1)
  1. 26 May, 01:35
    0
    20.0928.

    Explanation:

    The average atomic mass is (90 * 19.992 + 10 * 21) / 100

    = 20.0928.
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