really helpful! I have been confused about this for weeks, finally I can understand it

Wonderful explanation (as always) Sal! Thank you for making this video. The picture is also very helpful in visualizing.

We're going to learn this in school tomorrow! I'll be prepared then!

Idk, how do people come with these ideas....? it's just so...mind blowing..

Why can’t uni professors just generalize a concept first and then go in depth. Why do they have to build from ground up

u guys explained so well, that even i that speak a different langague could understand the concepts perfectly. good job

i actually cannot explain how much this helped me thank you so much !!

short and simple

After the deflection of various isotopes of the atom are recorded, how do you know what the mass of each is? How did you know, from the example in the video, that it was Zr-90 and not Zr-96 that was the most prevalent? How was mass 90 assigned to the most prevalent isotope? Because at the atomic level would it not be difficult to measure the mass of each deflected atom and from there be able to tell what the mass is and how much of it is deflected to find the most common isotope?

Boht ala👌jeetay rhiye

Best explanation on the internet period

You guys are the best ❤️🔥

You are very talented

Thanks in advanced for sharing such valuable contents. Really informative. 💐🙏🏻

This mass spectrometry was called magnet spetrum. Its iou source was 'electron ionization', though filament was heating and shooting the heat ion. The heat ion was flight between the source magnet, it called Fleming's left hand rule. When the sample which was gaseous injected into source, the heat ion was crashed the sample ion and let them lost one electron and sample ion to be electron changed particle that would help the sample ion moved on or affected by magtific field.

short summary of the video: Different elements are made of isotopes. to identify different isotopes and their abundance in nature, chemists use Mass Spectrophotometry, a technique which not only informs them about the abundance of an isotope, but also provides crucial details such as mass number, atomic number etc. Working: consider a sample of Zirconium passed through the MS. it is vaporized by the heater. the vapor then gets ionized by an electron beam source. the ionized vapors get accelerated between 2 electric plates. then they acted upon by 2 strong magnetic plates. the Isotopes with a greater mass to charge ratio face the least deflection, while, the isotopes with a low mass to charge ratio, face the highest deflection. the detector detects this and the frequency of the ionized isotopes can be represented in the form of a graph. the graph is plotted as follows: along the X axis: Atomic mass (u) along the y axis : relative abundance (%)

More useful for me... thankyou...

Perfect explanation

Thankyou so much 😇🙏

My God this is so clever. I wish my teachers would explained it that clearly

THANK YOU I LOVED THE SIMPLE EXPLANATION

TY.

Great and clear, thanks 😊

this is ingenious!

thank you

Wonderful explanation 👏

simple easy to understand

Wow! It’s really helpful

Just to elucidate: an isotope is the atom which has lost some of its protons. During electron bombardment, the atom loses its electrons, not protons. How it comes reliable to use mass-spectrometry to evaluate relative abundance of isotopes in the nature?

Thank u

Very helpful, thanks so much!

Why isn't this version on the MCAT module?

Very Very Nicely Explained! I watched so many other videos and they made it soo confusing! This is the best!

Thanks for the explanation!

Which model to get for the home lab? Would love to see some “hands on” videos!

concise, simple and very informative!

So... how can mass spec be used to analyse organic molecules? Like, how are people able to tell the protein structure by using mass spec?

Great presentation!

Thanks for this video. Great explanation!

very useful

Thank you for the helpful insight

Really interesting stuff

Thanks 😊

Very good video, thanks a lot 👍.

Understood

i get depressed only by (imagening) what of there was no khan academy, thanks for your existence

Great explanation on Mass spectrometry, always enjoy your video, very helpful.

thanks a lot

Thank you so much you really helped me🥰

So useful! Thanks!

Thank You Very Much 😁💙

Helpful thx❤

Did AP Chem in 2016 and got 5. Good days :)

Azərbaycan dilində verdiyiniz üçün minnətdaram

I have a question, Can it be done with plastic? What would it show? Does the concentration of uranium would lead as to the dinosaur date, or the creation of the plastic date?

thanks a lot, it was so helpful

Thank you🤙

Great

Spectroscopic techniques use electromagnetic radiation whereas spectrometric techniques do not involve usage of electromagnetic radiation....thus these two techniques are essentially different. The term mass spectroscopy is not used at all nowadays

Do I have any control upon the distribution of the kind of ions coming out from the electrons bombardment? In other words, do I know how many Zr+, Zr2+, Zr3+ etc. do I produce before entering the accelerating electric field?

Perfect

How do you know the masses of the isotopes of being deflected at the specific positions in the detector for you to know what is on the x axis of the graph

Generally good, but you need to go into how the atom gets ionised in more detail.

Hi! Nice graphic and video but there was something my grade 10 class noticed as I was explaining the whole "lighter ions are deflected more" thing. It would appear from the pattern of isotopes that the heaviest is being deflected the most. Am I missing something? I know you only borrowed the graphic, but as you are using it....

Cool

What do you mean by "deflected", exactly?

Nice

Thank you very much,I couldn’t understand but now it’s clear

i love you

Thanks😭💘💘💘💘💘💘

How do we know that we knocked out only 1 and not 2 electrons? How will we know that?

What's the condition of magnetic field to separate??e istopes

i love you sal

Have scientists ever even seen a proton or a neutron, or is this all based on hypotheses?

This is a good video, but not the most common type of mass spectrometer. The video describes a time of flight mass spec. The most common type is a quadrupole mass spectrometer.

Ur vedio is sooooo superb but I didn't get the point that y u have least likes

Ilove you so match

Wait, how do they determine the degree to which the sample is charged? And I suppose a more massive isotopes would also accelerate more slowly to the point where it's path is altered? And will, therefore, likely have more time for its path to be altered by the magnets at that point, unlike the faster, lower mass isotopes, which might be more easily rerouted, but for a shorter duration. Hmmmm.... Seems like a lot of more complicated processes are occurring here than you're letting on. Not to dismiss the fine work you're doing; my mind is just rattling with questions, that's all.

I heard this in the game half life

how exactly are the ions accelerated -- just curious

Sorry, why we must choose positive ion? Why not negative ion?

I think need more proper method to teach this topic.

Mass spectrometry and mass spectroscopy is NOT the same thing. This is really inacurate!

Please translate into urdu

Un natural accent is horrible and un bearable

thank you

Great

Understood