Atomic Mass: How to Calculate Isotope Abundance

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Atomic mass and atomic weight are the same thing--they are both the average mass of atoms of an element. It's mass number (not to be confused with atomic mass) that is the mass of a specific isotope.

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I am taking my general chemistry class and i wanna study in advance about the abundance of isotopes, wow just wow i understand what ur talking about, it just feel so different from just listening in class and the professor just keep talking and its all like non sense to me like ill never get to understand this topic. Thanks man, because of you i can answer all the question and recitation by studying in advance. Thank uu!

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I was so frustrated with this topic and now you made it so much easier! Thank you!!!

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TYLER!!!! This is so crazy that I'm finding you here talking about isotopes! I'm doing this course with Creative Live with my friend James Wedmore on KZbin Marketing and I'm doing a keyword search on KZbin for "abundance" because I'm coming out with a book on money in the fall...and I saw that relative abundance was a common searched term. And now here you are talking about it - but in a totally different way than I thought. Crazy freaking small world!

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Lol at 5:39 when he emphasizes the value is negative..lol

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+34.97x - 36.97x = -2.00x (he almost forgot the negative, thats why its stressed)

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[@motelioobadiah9832]

I would appreciate your assistance in solving this. Silicon has three stable isotopes, 28Si, 29Si and 30Si. The heaviest isotope has a percentage abundance of 3.1%. using the relative atomic mass from the periodic table, calculate the percentage abundance of the lightest isotope to one decimal place

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Thank you so much. I paused the video for the second equation and i did it all by myself. Im so proud. Thank you for teaching us Tyler. -Victor

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The video helps me a lot. Chemistry teachers in my school make the calculation complicating. Really thx a lot. I know how to complete questions with simple and straightforward methods.

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is that your only concern

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[@dahazz]

What if there are 3 isotopes? how can we tackle that problem?

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Hamza Ali tThere is not a question like that,unless they give u one of istope’s percentage

[@thetrillionairelife5504]

devid them by ther pirsent and then add them

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@GT Talks True, finding the percentage is legit the purpose of the problem -_-

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good question, i’m trying to figure that out right now too😅 my question is asking to find the abundance for 2 isotopes while i have the abundance of 1 and the atomic mass

[@pullingthestrings5233]

@@valentinacastanoo that's super easy. It is done in the Same manner. But the third we be called different

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Thank you so much, now I know how to solve for the % abundance. 💯

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I love how excited he got when he forgot to put the negative before the 2.00

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watching this a day before my final ahaha would be a lost cause without you

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If the question, for example asks, "A sample of Chlorine gas the same atomic mass stated on the periodic table. There are two known stable isotopes of Chlorine: Chlorine-35 and Chlorine-37. Calculate the percent abundance of each isotopes in the sample." How would I answer this question if it doesn't tell the atomic mass of Chlorine 35 and 37?

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I love your videos! Your method makes them so easy to understand. This is one that my professor gave me, but i am confuse. How can i use your method in this problem. Silver exists as two isotopes with atomic masses of 106.9041 and 108.9047 amu. Determine the average atomic mass for silver if the % abundance for each isotope is 51.82 and 48.18%, respectively. Can you show me with your method please? I would really appreciate it if you are available.