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rozabelikov

  • 2 years ago

Calculate the average atomic mass of an unknown element that has two naturally-occurring isotopes. The first isotope occurs 75.47% of the time and has a mass of 248.7 a.m.u. The second isotope occurs 24.53% of the time and has a mass of 249.4 a.m.u.

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  1. primeralph
    • 2 years ago
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    |dw:1368208509576:dw|

  2. brookester6
    • 2 years ago
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    would equal 61.08

  3. primeralph
    • 2 years ago
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    no.

  4. brookester6
    • 2 years ago
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    yes >:(

  5. primeralph
    • 2 years ago
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    well then.

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