Atomic Mass: How to Calculate Isotope Abundance 

Tyler, do you wake up every morning with a smile on your face knowing how many lives you've saved?

As far as I'm concerned this is the best channel on RU-vid

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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the best teacher in chemistry and i understand your teaching and thank you for your kindness to us

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I COULD NOT THANK YOU ENOUGH!! I THINK YOU ARE THE GREATEST TEACHER OF ALL TIME BECAUSE I ONLY UNDERSTAND YOUR WAY OF TEACHING!! THANKS SO MUCH! I APPRECIATE YOUR HELP!!

Mr. DeWitt you are literally my favorite educator on youtube. You have saved my butt countless of times. I'm currently in 10th grade and my chemistry teacher is really rude and mean so I'm pretty scared to ask her question, and even when I do she either won't answer them or answers them inadequately. I would just like to thank you for all these videos that you make. -Jack

GOD BLESS YOU TYLER DEWITT!!! THANK YOU! --says every confused chemistry student after they watch your videos

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when my Chem professor was explaining this I could not understand how to do it to save my life. I watch one video and it seems like basic elementary school math. Thank you so much, Tyler. You are a saint

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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 RU-vid Marketing and I'm doing a keyword search on RU-vid 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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Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.

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Mr. Dewitt thank you so very much for this tutorial. My concepts are so clear. Could you please do a series on A levels Chemistry syllabus topic wise tutorials? Bless you

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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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Thanks again man, you're a life saver.

Thank you Tyler DeWitt I understand very well of your explanation Keep Up The Good Work .

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Thanks Tyler for being an amazing teacher. You saved me multiple times while I was studying for my quiz/tests :) I'm so so grateful!!

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Tyler, you are a wonderful teacher.

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.

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

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boning up for our final on friday and once again Mr DeWitt to the rescue!! you are a huge reason of why i am even close to passing, sir. eternal gratitude

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Hi Tyler, what should the variable and the "in terms of x" be to calculate the isotope abundance of three or four isotopes? You make this so easy, thanks a lot!

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