physical chemistry

indium(atomic wt.= 114.82 u ) has two naturally occuring isotopes, the predominant one from has isotopic wt. 114.9041 and abundance of 95.72%. which of the following isotopic wt. is the most likely for the other isotope?

  1. 👍 3
  2. 👎 2
  3. 👁 1,862
asked by veer
  1. no answer choices.
    abundance first isotope = 95.72%
    abundance other isotope is 100-95.72 = 4.28%
    Let x = mass other isotope

    (114.9041*0.9572) + (x*0.0428) = 114.82
    Solve for x

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    2. 👎 3
  2. 112.94

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    2. 👎 3
  3. Let atomic weight of other isotope is M

    114.82= 114.9041×95.72 + 4.28×M ÷ 100

    M = 112.94

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    2. 👎 3
    posted by Smriti
  4. Jdjgjdwk

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    2. 👎 4
  5. 112.94

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    2. 👎 0

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