What's the Difference between Mass Number and Atomic Weight?
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What's the difference between mass number and atomic weight? Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic weight is the average mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes.
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thank you! God send you to rescue all the chemistry students...
Marcela velasco+ very true... 😭😭😨😨saviour👏👏🖐
Chemistry wasn't really my type of thing but you sir, make me in love with chemistry, thank u! ♥️
there is complex math and complex science that can be done to determine the percentages. but if you had to do a problem with this stuff, the percentages would be given to you. you can look them up in a book or on the internet. i don't have a quick easy answer for why there are more boron-11 atoms. it's just the way it is!
OK
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.
These videos are extremely helpful. Not everyone is able to teach their knowledge. So thank you so much.
What an Amazing Explanation Sir.
Tomorrow I have my Chemistry Exam and I was really confused about it
Thank you so much for explaining 😃
i have about five videos on dimensional analysis. i just call it "unit conversion."
Very informative!
and you just saved me from cramming
the atomic weight formula.
how do you know the percentage of each atom?
through years and years of research and experiments (chemists)
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I have seen 10 videos on this topic but I it understand when I see this video. Very nice video
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Thanks tyler this was haunting me for weeks you solved my confusion in 5mins .🙏😊thanks
You could not ask for a more lucid explanation. Thanks.
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Great explaination... I was really confused 😵 but now my concept of difference between atomic weight and atomic mass is 🔮crystal clear
Keep uploading 11th and 12th syllabus.. u will definitely get more than 3 millions ...luv from tamilnadu
i am a campus from Taiwan.
i had the same problem when i was high school, those video still useful for me.
hope more children like science by your efforts.
You are great now i understand the whole concept
My kind of teacher. Kudos
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The way this man teaches is solid gold
He's solid Au
Because Au is gold
Perfect explanation. Thank you so much for this concise explanation, it's so helpful, I was confused. 😊
This taught me about 5 more things that I expected to learn
Could have done with you a couple of years ago..My uni books are crap at explaining these concepts..Thank you heaps.
I was reading this in my book and my head was spinning. I understand now, thanks. I do have a question though. How did you come up with 20% boron 10
and 80% boron 11.
i noticed that you said in one of your other videos that atomic mass and atomic weight are the same.
i'm not shore who to believe, but in this program that is used by my school it says that atomic mass and atomic weight are similar but different.
Atomic mass is nothing but 1/12 of C-12 isotope....whereas atomic weight is the average of all the isotopes of a particular atom existing in nature...
Thank you!!! That was easy to understand
Dear sir I randomly click on your video and it is just amazing ❤️ lot of love from india 🇮🇳
Such a great explaination .🙏
Thank you for saving my chem exam :):)
P-E-R-F-E-C-T EXPLANATİON THANK YOU SOOOO MUCH FOR THİS VİDEO
I loved your presentation. However, I would love it more if you send me how to get 20% and 80% mass in calculation (or formula) please?
Your explanation is too good man!!!!
Thank you, this was very lucid explaining. Great work.
thank you so much for this video. i didnt do too well in chemistry during high school. now i can make up for it
Concept cleared..
Hi ... tyler people getting confuse in molecular weight and equivalent weight.
just explain in tyler style which helps lot.
Sir thanks you so. Much you are just like walter Lewin but for chemistry
Please start uploading again
Thanks and love from India
After watching godly explanation, I will just 🤩 wow
Thank you so much 🙏
You are so awesome! You thoroughly simplify and explain the details of chemistry. Thank you!
Superb sir @india
Very good video, but why did you use boron atoms in your example? They are so boring...
Sorry, I just had to.
You explain it very well. Kuddos!
Who are watching this in 2024😊😊
🖐️🖐️
Thank you very much, this really cleared up much of my confusion about atomic weight VS atomic mass :)
Awesome...........
For your efforts
well explained...thnku a lot sir
Thank you so much
Thank you ❤️
Thank you 😊
Thank you so much, salut
Thank you so much for your great lecture. It's so clear and easy understanding.
This is so helpful thank you SOOOOOOOOOOOOO MUCH!! Keep up the great work Tyler!!!
Thanks
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King of chemistry! thank you so much sir this is really helpful!
how to calculate the no. of isotopes of an element and how you are converting it into percentage please tell
thank You! I love and understand Chemistry better now!! Please make videos for Chemistry 2!
can you explain the different of atomic weight, atomic mass, mass number and relative atomic mass..a bit confuse with all these thing..i'm a teacher as well and i have no idea how to differentiate all these to my students..help me..thanks
Thank you
Thank you SOO much!!!! I got it!!!!!!
Omg. Thank you sir!
Great teaching Thankss so Much for helping Sir!!
thanks you are amazing.......
Thank you for this video. Cleared it up for me.
You are Amazing..3
Amazing.
some are stressing atomic mass and atomic weight are different
amazing
thanks man!
thanks
Awesome
Can you make it clear of the difference between atomic mass and mass number?
Ty
I confused, why did you say that the number in the periodic table (10.8) is the atomic mass in amu? As I know the one in the periodic tableis the mass of 1 mole atom, not the mass of a single atom... Please help to explain this
It's actually both!
10.8 u is the mass of an average boron atom in atomic mass units
10.8 grams is the mass of 1 mole of boron atoms
The why really does come down to it simply being how it has been defined
why is the mass number of one atom the same number as a mole of atoms?
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You're amazing. Thanks😉
Thank you so much professor ❤️
can u pls make videos on mole concept
At th-cam.com/video/_jmKgdi3jjQ/w-d-xo.html the atomic weight is written as 10.8. But isn't atomic weight actually a dimensionless quantity?
Gautham Shankar f u
+ten chittapong f u
+Karan Mishra what is the meaning
can't thank you enough
Wouldn’t that be the “atomic weight,” rather than the atomic mass, which is the number of protons+neutrons??
The atomic mass is not the number of protons + the number of neutrons, that is the mass number
The atomic mass is the mass of a single atom
The atomic weight is the average mass of an atom, taking into account the percentages of each isotope
what we call that 10 amu and 11 amu?is that atomic weight as well?
Yes
different video s giving different ideas on atomic mass and atomic weight. getting more and more confused .please clarify.
nice but how human calculated there are 20% of boron 10 present in the world and 80% of boron11 present in the world. and there are infinite universe and there are infinite numbers of planet so boron present in other planet also. MAY BE IF TAKE A BORON SAMPLE FROM EARTH THERE ARE 20 % OF B10 AND 80% OF B11.. BUT IF U COLLECT BORON FROM OTHER PLANET IN FUTURE THEN U MAY FIND DIFFER BETWEEN PERCENTAGE....
My First lecture on ur channel, was forced to subscribe by the way of ur clearing of concepts.👍
Dear Mr. Tyler:
I love your videos..you are awesome. However..you say one Boron-10 isotope "weighs" 10 amu...this is confusing to me. 10 amu is a Mass, not a weight.
I think the term "atomic weight" is confusing...as I understand it, the word "weight" refers to the "weighted" average...ie: the percent of the Boron that exists as B-10 is different than B-11 and therefore the average is "weighted" toward the mass of the more common isotope. You explain this beautifully with your pie graph.
It has nothing to do with "weight" associated with amu's...
For example, let's say you have 4 exams in a class. The first 3 are worth 20% of your grade, and the 4th exam, let's call it the final exam, is worth 40%. This means the final exam is "weighted"; just like Boron-11 is "weighted" because it is more common than B-10.
That is why I think average atomic mass is such a better term than atomic weight...
Where am I going wrong?
M. Chow
You’re worried about the word “weighs.” But that word refers to both mass and weight. To weigh means to measure mass or weight. It’s correct to say “I weigh 10 kg.” 10 kg is a mass, not a weight. But do you know anyone who says “I mass 10 kg?” or “my mass is 10 kg.” So just because I say “weigh” doesn’t mean I’m talking about a weight.
But average atomic mass is probably a better term.
@@tdewitt451 So nice of you to respond;..thanks so much. Your response is greatly appreciated. Please keep up your work...it helps so many of us!
how u take 10 and 0.8 and from where??? ??????????????????????
What do you mean exactly?
Boron has two natural isotopes, boron-10 and boron-11. Boron-10 makes up approx 80% of all boron atoms, boron-11 makes up approx 20% of all boron atoms. Scientists can measure these from many samples of boron from around the world, that's how we get the percentages.
🙏🙏
Wait... you just made two videos for the difference between atomic number and atomic MASS/WEIGHT and both are identical so... I assume that atomic mass is equal to atomic weight, isn't it?
I'm not trying to be ironic, I've been a long time trying to figure out the difference. In physics there is an obvious one, it seems it doesn't matter in chemistry.
(Amazing videos, by the way. You're an inspiration)
😊
I'm here because of of element 115