anonymous
  • anonymous
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.
Mathematics
schrodinger
  • schrodinger
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primeralph
  • primeralph
|dw:1368208509576:dw|
anonymous
  • anonymous
would equal 61.08
primeralph
  • primeralph
no.

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anonymous
  • anonymous
yes >:(
primeralph
  • primeralph
well then.

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