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Пікірлер
@justanotherdump-ft5rf 36 минут бұрын
thankyou sirrr
@jojorew7835 12 сағат бұрын
YOU ARE A GIFT TO THE STEM WORLD 💕
@DrummingStuff2 12 сағат бұрын
SO HELPFUL I was confused on this for a month 🙏
@EbonySmith-vu8ze 13 сағат бұрын
I love all the science help and the encouragement to keep at it. Thanks so much for thinking of us struggling. I don't know if others have asked but, I need to know where do you get all of these awesome T-shirts.
@hamzakamal579 23 сағат бұрын
Awesome
@ChadsPrep 22 сағат бұрын
@aquarianmajo Күн бұрын
here we go again! with the help of your videos, i finally passed organic chem 1 after returning back to college after failing it 3 years ago. even while going through one of the worst times in my life, you helped made this a little bit easier! now its time to start orgo 2! thank you for everything that you’ve done and will do! the community appreciates you!
@ChadsPrep 23 сағат бұрын
Glad the channel is helping you - Fight through the challenges and succeed! Happy Studying!
@gofast7552 Күн бұрын
25:28
@armoredcoremorelike Күн бұрын
You're actually the goat dude, so much of orgo and biochem just clicked for me.
@ChadsPrep Күн бұрын
Excellent - Happy Studying!
@SK-ry5we Күн бұрын
you are a gift from the universe Chad.
@ChadsPrep Күн бұрын
@mawadadaoud1530 Күн бұрын
Thank youuu!! !! !! !!
@ChadsPrep Күн бұрын
You're welcome!
@GeorgeCronigen Күн бұрын
Does the formal charge formula work for transition metals that have a lot of valance electrons. For example Fe has 8 valance electrons and if we want to calculate FeCl3 we say 8 valance electrons minus the non bonding electrons which are 5 minus 1/2 x the bonding electrons which are 6 so 8-5-1/2x6=0.
@ChadsPrep Күн бұрын
It does work for transition metals, but you'll find that formal charge is most commonly used in the context of molecular compounds and organic chemistry, while oxidation state is most commonly used almost everywhere else including ionic compounds and coordination compounds. And the values and formulas for formal charge and oxidation state are not the same. Just a heads up!
@GeorgeCronigen Күн бұрын
Chad I know that you are busy but please just answer this last question. So in the case of transition metals I see the oxidation state for example FeCl3 and I say 3 valance electrons - 0 non bonding - 1/2x6 bonding= 0 and respectively for FeCl4- 3-0-1/2×8=-1. If my logic is wrong plz divert me to soem of your videos to make sense of it
@ChadsPrep Күн бұрын
George, the issue I think you may be running into is that the rules for drawing lewis stuctures are not always followed so precisely for transition metals and how we determine geometries from lewis structures isn't always relevant (which might be why the rules for drawing lewis structures are not always followed). In the case of iron, it normally has 8 valence electrons, not 3 ([Ar]4s^2 3d^6). If you were to try and follow the rules for lewis structures in drawing FeCl3, then you would somehow end up with 5 non-bonding electrons around iron. If you do a quick search online, you won't find anyone accounting for these nonbonding electrons in their lewis structures or giving a reason why they don't. In fact, many start by claiming that iron only has 3 valence electrons (which is just wrong). They might only want to include 3 of the valence electrons in their structure, but they should at least explain why we are allowed to leave the other 5 out. So to revisit your question as to whether the formula for formal charge applies to transition metals. It would if we were careful to follow the rules for drawing lewis structures. If you actually drew out FeCl3 with 5 nonbonding electrons on the iron atom, you would get 8 valence electrons - 5 nonbonding - 1/2x6 bonding = 0 For FeCl4^- you would get 8 valence electrons - 5 nonbonding - 1/2x8 bonding = -1 What a pain in the butt. I've never seen a lewis structure for FeCl3 drawn with these nonbonding electrons. If it isn't customary to follow the normal rules for drawing lewis structures with transition metals, then you won't be able to use the normal formula for formal charge from such structures either. Hope this helps!
@amuboluwatife Күн бұрын
Thanks Chad! you are a life saver
@ChadsPrep Күн бұрын
You're welcome!
@furkanylmaz4783 Күн бұрын
thank you, you are a savior
@ChadsPrep Күн бұрын
Glad the channel is helping you.
@rushflicks 2 күн бұрын
I am a *homo*genous mixture 😔
@GeorgeCronigen 2 күн бұрын
Just an observation. Arrhenius in the reaction HCl+H2O can only classify HCl as an acid. Water according to him cannot be considered a base. So even in aqueous solutions these two theories don't cover each other completely .
@TS-jm1xo 2 күн бұрын
Hi chad, what textbook are you basing these lessons on? The textbook our course uses is pretty inaccessible and I'd like a comprehensive algebra-based book to study off of. Thanks!
@cxlviN-FoRliFe 2 күн бұрын
Life saver
@ChadsPrep Күн бұрын
@LightTalick 2 күн бұрын
Thank you very much for these wonderful teaching. But I am a little bit confused about the sp3 hybrid and the bond angles in the methane that is 109.5. How do you get it sir?
@luckasmalachy8371 3 күн бұрын
Hello, advise if you want to bind thiamine pyrophosphate onto the silica gel by dissolving this material in ethanol and triethylamine to have a modified silica bead. What could be the type of reaction here?
@CurlyMaiden 3 күн бұрын
We love you forever Chad
@ChadsPrep 2 күн бұрын
@zoimitika5154 3 күн бұрын
as a greek student studying molecular biology thank you a lot
@ChadsPrep 2 күн бұрын
You're very welcome from USA.
@captainamericawhyso5917 3 күн бұрын
Why at 24:35 he says that the only acid left is H3O+ ? Isn't H3O+ in the reaction a conjugate base?
@MahletBruh 3 күн бұрын
What can I say except you are the best 👌
@ChadsPrep 2 күн бұрын
Wow - thanks!
@quantumics5298 3 күн бұрын
Love you!!!!
@ChadsPrep 2 күн бұрын
Thanks!
@زهرافرخزاده 3 күн бұрын
Thank you so much chad,I am so happy to know you and find your channel.God bless youuuu sir.
@ChadsPrep 2 күн бұрын
Glad you found the channel - Happy Studying!
@kundaibvute 4 күн бұрын
Nxaaaw thank yu Sir Kudos
@ChadsPrep 4 күн бұрын
You're welcome!
@parveenieparrish9082 4 күн бұрын
THANK YOU CHAD... STARTING MY COLLEGE CLASS SOON AND NEED NO TO BE LOST INTO CLASS AND FOUND YOUR VIDEO MANY YEARS AGO AND NOW REMEMBERING HOW WELL YOU TAUGHT YOUR LESSONS. WEEEL STRUCTURE AND DEFINTELY KNOW WHAT YOY TEACH ... AND YOU DONT BEAT AROUND THE BUSHES TO SPEAK IN YOU LECTURES TO MAKE MY FALL ASLEEP.. THANK YOU,,, YOURE SO SMART..
@ChadsPrep 4 күн бұрын
Glad the channel is helping you - Happy Studying!
@wouldbfarmer2227 4 күн бұрын
Great info, but he talks way too fast for me.
@ChadsPrep 4 күн бұрын
I get that a lot - fortunately you can slow down the playback in settings. Hope that helps!
@christopherrozefort669 4 күн бұрын
Is this whole playlist for chemistry 1 and 2? When does chemistry 2 videos start
@IX-A09PavanR 4 күн бұрын
Really amazing sir. Great work. Never stop teaching
@ChadsPrep 4 күн бұрын
Thank you very much.
@SaraAhmed-ee1qy 4 күн бұрын
my professor and my book explained this so bad but your explanation made everything clear to me in one go THANK YOU SO MUCH
@ChadsPrep 4 күн бұрын
You're welcome - Glad the channel is helping you!
@alagiyawannamukaweti4448 5 күн бұрын
As always.. COOL ❤😌
@ChadsPrep 5 күн бұрын
Thanks!
@Insist-z2g 5 күн бұрын
I hope you see this early enough, you have been helping me and I thank you. In your first example calculating the formal charge, how does oxygen form a bond with carbon and still has 3 lone pairs of electron?
@vanes23-19 5 күн бұрын
❤ thank you
@ChadsPrep 5 күн бұрын
You're welcome!
@Heh18287 5 күн бұрын
we appreciate your hard efforts, THANK YOU🤍🤍
@ChadsPrep 5 күн бұрын
You are all welcome!
@FataiBello-s7t 5 күн бұрын
Wow, thanks chad, just getting to know your channel and found it very assisting
@ChadsPrep 5 күн бұрын
Excellent - glad you found us!
@DANIFUTUREMD 5 күн бұрын
How has this not gotten more views 👀
@ChadsPrep 5 күн бұрын
@abivaldez9711 5 күн бұрын
I LOVE CP
@ChadsPrep 5 күн бұрын
@rhakel7784 6 күн бұрын
Thank you so much for this sir😩🙏
@ChadsPrep 5 күн бұрын
You're welcome!
@ahmadkasim9529 6 күн бұрын
You are the best!
@ChadsPrep 5 күн бұрын
@dhruvdhariwal2914 7 күн бұрын
| Chad |
@ChadsPrep 7 күн бұрын
Math/science humor - love it!
@amirfa4330 7 күн бұрын
Thank you so much .
@ChadsPrep 7 күн бұрын
You're very welcome.
@about42hotninjas97 7 күн бұрын
I skipped all the chemistry classes at uni-your, videos saved me :). Thanks❤
@ChadsPrep 7 күн бұрын
Glad the channel is helping you!
@MarthaElemi 7 күн бұрын
Thanks a lot sir it's was really helpful
@ChadsPrep 7 күн бұрын
You're welcome!
@HooriyaMuskan1 7 күн бұрын
Hey sir what's the difference between attack of nucleophile in retention and inversion kindly explain in detail ?
@Kareemfawzy22 7 күн бұрын
So this is the last lecture in this course i have finished this course it was so useful and interstinل the explanation is Awesome it helps me at school because we study Natural, electrical and modern physics Thank u from Egypt !
@ChadsPrep 7 күн бұрын
Glad the channel helped you - You're welcome from USA!
@shreksmith5592 7 күн бұрын
Is it possible that you made an ICE calculation video regarding equilibrium calculation but with pressure? But other than that, thank you so much for this!!!! 🙏
@NohaElbeheiry-k1y 7 күн бұрын
what about electrical current in electrochemical cell its flow from cathode to anode through what? a) external circuit b) salt bridge
@gozde1300 7 күн бұрын
such good content! I really needed to understand acid catalyzed reactions for my finals and your video helped a lot thank you!!!
@ChadsPrep 7 күн бұрын
Glad the channel helped you!
@ahmadkasim9529 8 күн бұрын
Hi Chad, I want to express my empathy for what is happening in your country, specifically LA, my prayers and thought are with you all. I have a curious Q, what is the meaning of v-sign you always do when explaining? You can check this video @ 3:02 exactly. I am curious because I copied it and I suddenly saw one person doing it. I am happy I know you, I always enjoy your lesson more than my lecturers. Thank You!
@ChadsPrep 8 күн бұрын
Hi Ahmad! Those are a way of symbolizing the quote or quotation ("") for whatever is being said either because one is directly quoting someone or because one is using the exact word or phrase that is commonly used. It is this latter case that I use the "quotes" symbol here :)