anonymous
  • anonymous
how do you calculate the isotopic abundance if you have 3 isotopes instead of 2?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
what isotopes are you looking at?
anonymous
  • anonymous
Silicon
anonymous
  • anonymous
Do you have the 3 isotope numbers and how often they occur in nature?

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anonymous
  • anonymous
can you just give me an example of how to solve this i got this question off a friend.
anonymous
  • anonymous
multiply the atomic weight by the percentage for each then add them togeter.
anonymous
  • anonymous
Look at Liliana's question 2 above yours.
JFraser
  • JFraser
@Z, I think he's asking the question in the opposite direction. How do you calculate the percentages of 3 isotopes if you have the average. Short answer is, I don't think you can. Calculating a weighted average works because you can set up a system of 2 equations and 2 unknowns. Working backwards, you'd need a third equation to solve for a third percentage, and I don't konw if you can do that.

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