Calculating Percent Abundance Rubidium Rb Isotopes Example

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Dr. Shields shows you step by step how to calculate the percent abundance for each isotope, given only the isotopic masses for 85-Rb and 87-Rb. General Chemistry
  1. Shawn Shields
  2. Rubidium (Chemical Element)
  3. Isotopes Of Rubidium
  4. natural abundance
  5. percent abundance
  6. isotopes
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Комментарии
Автор

+05boobear19 Thank you for finding that error, and you are not rude! :) I actually wrote the number down incorrectly on the first slide, but it is correct on the second one. (The subtraction yields - 1.4412, not -0.14412). The process and answers are still fine.

shawnshields
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Hello, Question during the video minute 5:23 we have 1.4412=1.9982x, then minute 5:44 we have 1.4412=1.9974x. Where the 1.9974 come from? We should still have 1.4412= 1.9982x, so then we divide 1.9982x right? Do I'm missing something?

MrsCorona
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Thank you very much. I did have the answer 85.468 I just wish I have more time to practice more. It makes sense.

MrsCorona
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Hello I have a question about the percent abundance problem. Why did you change the -0.14412=-1.9982x to -1.4412=-1.9982x when you changes slides? is that part of the process? or was that a mistake? I don't mean to be rude by pointing something out but I would love clarity on this topic.
Thank you.

boobear