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Kari Young
เข้าร่วมเมื่อ 18 มี.ค. 2020
I'm a chemistry professor at Centre College. I teach courses in general chemistry, inorganic chemistry, and alternative energy technology.
วีดีโอ
NMR Submit Job
มุมมอง 50ปีที่แล้ว
Ensure that you are logged in using the account for your course or research mentor. Update the sample table in spectrometer control. Select all samples for which you want to acquire the same spectra. You can shift click or ctrl click to select multiple samples. In the lower left, click to create or update (reuse) a job. In the Jobs panel, select or more methods (e.g. Proton or Carbon) from the ...
NMR Sample Loading
มุมมอง 94ปีที่แล้ว
Ensure that spinner fully extended Wipe outside of tube with Kimwipe Insert tube into spinner Use depth gauge to ensure proper sample height Insert spinner into carousel; note slot number
Titration 1 Interpreting titration curves
มุมมอง 393 ปีที่แล้ว
Titration 1 Interpreting titration curves
Pre-lab Video: Equilibrium and LeChatelier's Principle
มุมมอง 163 ปีที่แล้ว
Pre-lab Video: Equilibrium and LeChatelier's Principle
Worked Example with the Arrhenius Equation
มุมมอง 4693 ปีที่แล้ว
Worked Example with the Arrhenius Equation
Collision Theory and Temperature Dependence
มุมมอง 7233 ปีที่แล้ว
Collision Theory and Temperature Dependence
thanksssss a lot
Tomorrow is my exam and it really helped.
Thanks 🙏
What if the electron affinity value given is for F2
Thank you so much ❤
Thank you
how do you get an A1 in the first place.
Thankx
Your voice is so satisfying 🥰
Then when you discuss the inverse operation you should really be discussing inverse elements of a group.
The identity is not an operation of a group! The identity is an element of a group! Groups are defined by both a set and an operation. The operation is applied to the elements.
I suppose you are dealing with elements that themselves are operations. That's not uncommon in group theory, but your language has to reflect that.
I haven't even consumed the content yet, but I'm going to give you a sub just for being the top result when I searched for "character table" (I think we need more people explaining this stuff on YT!)
Thank you for this video
Doesn't explain the labels Ag, Bg, Au, Bu at all
Nope. But you can search "irreducible representations" to learn about them
The best proof that abstract learning is not the thing for most of us. Give examples first and then go abstract. That's the right order if you understand didactics ... and human beings. This is how you do it, lady. th-cam.com/video/jkOyKW9DVZA/w-d-xo.html
Where does the other electrons come from
got cut off at the end :(
But don't tell her ;-)
th-cam.com/video/FOmI-dsqe1Q/w-d-xo.htmlsi=SODM2pZ6PBofuHno
thank you
Such a very simple and clear explanation!! I was finally able to understand it. Thank you very much!
Thanks! Very soothing rhythm to the explanation.
Thanks for showing this useful video. but I have a question about number b"1"u, b"2"u. could you tell me what's the mean of the number??
well explained, thank you!
Really helpful video series. can you upload more? thanx
very helpful, thank you!
Agreed
So for number 2 would the answer be "No, the Lewis structures cannot be used to account for the trends in experimental bond lengths shown, because they cannot explain the difference in bond length between superoxide and peroxide"?
I tried to do this by considering x- y- z-axis of each atom. And I got reducible representation = 12 1 -2 4 0 2. I know your answer (12 0 -2 4 -2 2) is correct. But I would like to know where I went wrong.
How did you come up with the reducible representation in the first place? Like how did you know to put 4 for E, 1 for 2C3, and 2 for 3sigma v?
Search construction of character table and any point group you want like c2v or c3v there are alot of helpful videos then after that you do this video.
Here th-cam.com/video/T1nVUuDDTUw/w-d-xo.html
You perform the operations on all the atoms (including the N) to come up with the 4, 1, 2. It's not 3, 0, 1 because that would be excluding the N atom (and only be concerning the Reducible for H atoms), which isn't being done here.
Its the number of atoms that don't move after the operation. In E there is no movement, all 4 atoms stay in the same place so its 4. For 2C3 it rotates around the C3 axis moving all the hydrogens to a different spot but leaving the nitrogen so its 1. For the vertical reflection planes nitrogen and one hydrogen remain the same while the other two hydrogens are reflected to each others position so the number of unmoved atoms is 2.
OMG thanks I had a doubt about something and you cleared it. thanks <3
this is better than my textbook thank you so much
Do you have the PDF version of this course please?
Thxs a lot for this video. The understanding of minus 2 is quite difficult but essential for the rigorous procedure_reducible representation. Then we can draw a M.O.Diagramm of CO2.