THANK YOU SO MUCH. My professor taught us how to get the R and S for the simplest molecule, then gave us an extremely complicated one for the exam.. I learned more from you in 15 minutes than I did in 2 hours with my prof.
you could also tell the difference between R and S by the direction of the arrow and connecting it to the way both letters R and S are written . when writing R you have to go clockwise (the upper part of it) and when writing S you have to go counter clockwise .
I must have done some good deed in the past to be able to find your channel. Thank you so much. You are the best chemistry tutor I have ever had the chance to learn from.
Always happy to help! If you're pre-studying now and are interested in additional help as you go through the class, make sure to check out my Organic Chemistry Study Hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
Madamme LEAH! You are so much good in Organic Chemistry, You make Hard things in Stereochemistry simple as much a possible, I appreciate You and U always be blessed! Continue by doing so for other courses to help Us enjoy Chemistry or become better Chemists!
I know this was so long ago, but still. thanks Leah. FYI you can always think of it as a steering wheel, pull down to the right to turn right -R and the old term for left-handed was sinister. pull down on the left to turn left -S
Thank you so much !! I was learn so many times but,it does not understand about R and S configration before this lesson .But,now it is very clear thank you once again
This made so much sense. Excellent oratory skills and superb explanations. This was wayyy better than 2 weeks of professor's explanation. Cheers Leah, you're a lifesaver!
I'm sorry, but I don't offer tutoring over social media. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
Technically the dashes going back should be directly behind the OH group, but then you wouldn't be able to see it. As such it's customary to draw it offset to either side, right or left, to show that it's going away and into the page
I'm sorry, but I don't offer tutoring over social media. If you ever find you need help with questions like this again, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
the videos keep saying to follow along with the cheat sheet, but each time i try to download the chirality cheat sheet i get a different email with a link that is not the chirality cheat sheet.
Yes. One goes hand in hand with the other. As atomic number increases, so does an atom's mass. Bigger/heavier groups, whichever way you want to think of it, take priority.
Yes and no. We use periodic table trend/atomic number for simplicity. If and only if faced with an isotope you'd look at mass. I say this because sometimes an atom will have lower mass than a previous atom (rare) and because it's more confusing to have to look up the mass when most orgo professors do not include them on exams.
Could you please elaborate" I say this because sometimes an atom will have lower mass than a previous atom (rare)" I still don't understand, you only explained that its best to use atomic number, not mass because exams use it and that its confusing but Im not talking about test taking, no offense It just seems to make sense if atomic mass is used to prioritize. Until you explain please
THANK YOU SO MUCH. My professor taught us how to get the R and S for the simplest molecule, then gave us an extremely complicated one for the exam.. I learned more from you in 15 minutes than I did in 2 hours with my prof.
You're very welcome, so happy to help!
you could also tell the difference between R and S by the direction of the arrow and connecting it to the way both letters R and S are written .
when writing R you have to go clockwise (the upper part of it)
and when writing S you have to go counter clockwise .
good tip
I must have done some good deed in the past to be able to find your channel. Thank you so much. You are the best chemistry tutor I have ever had the chance to learn from.
Wow, thank you!
future pharmacist here. thank you so much!
You are welcome :)
what do u mean
mahadi hasan this was all pretty straightforward...consult a dictionary if you still don't get it :)
Lol same here
hi quick check were you able to become a pharmacist?
My professor makes this look so hard. So the problem is not the topic but the way some professors teach it.
Sometimes we need a different take to understand.
THANK YOU LEAH!!! Wow, please never stop this amazing channel! You are clearly one of the best.
You're so welcome! And I have no plans of stopping :)
BRO THIS TOPIC WAS ALWAYS CONFUSING BUT YOU JUST BROKE IT DOWN SO EASILY I LOVE YOU
Glad you are able to understand the topic well. Don't forget to subscribe! :)
Thank God I found your channel, you videos are literally saving my life, have organic chemistry in two weeks and I am confident I will ace it.
Always happy to help! If you're pre-studying now and are interested in additional help as you go through the class, make sure to check out my Organic Chemistry Study Hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
Thank you! I was confused for about an hour, but after seeing your video, I get it now.
Awesome! Glad it helped!
Madamme LEAH! You are so much good in Organic Chemistry, You make Hard things in Stereochemistry simple as much a possible, I appreciate You and U always be blessed! Continue by doing so for other courses to help Us enjoy Chemistry or become better Chemists!
Wow, thank you! Happy to help!
I've looked at over 50 of your videos, and I pretty sure you're a genius, at the very least a didactic genius.
Oh wow, 50! I'm honored!! and Thanks so much for the kind words, I love teaching and promise to strive to live up to your 'didactic genius' compliment
Outstanding explanation of difficult topic!
Amazing work
This channel must have millions of subscribers!
Not yet, but I care about all my subscribers and strive to help the understand (and dare I hope love) orgo!
I know this was so long ago, but still. thanks Leah.
FYI you can always think of it as a steering wheel, pull down to the right to turn right -R
and the old term for left-handed was sinister.
pull down on the left to turn left -S
You're welcome! Great tip for memorization. :)
BRILLIANT VIDEO!!!! Never could understand this but you explained it in one video and I understand it now! Woohoo!!!!
Awesome!!!
thank you, most simplest and most concise terms of any of the videos i've seen on this topic
You're so welcome!
Respect to u from India... U r awsome mam... making it easy for me..
You're welcome!
Madam you have great explanation you have cleared all my doubts thank you so much
You're welcome!
Thank you so much !! I was learn so many times but,it does not understand about R and S configration before this lesson .But,now it is very clear thank you once again
Glad I could help! You're welcome
This made so much sense. Excellent oratory skills and superb explanations. This was wayyy better than 2 weeks of professor's explanation. Cheers Leah, you're a lifesaver!
You're so very welcome, happy to help!
Your teaching is amazing 🤩
Thank you! 😃
U r Awsm mam. before watching this video R&s to found more difficult for me but now its very easy ...Thank u so much
🙏🙏🙏🙏🙏
You're very welcome!
thanx ...med student in Jordan university
You're very welcome!
Your teaching is excellent 🦋🥰♥️
Thank you! 🙂
You're more than genius, keep it up my madam!!!
Thank you!! :)
Literal perfection!
Thanks!
Thank you.. i gained much than when i was in class
I'm so glad that you found the video helpful!
Leah! you're my savior !:) thank you so much for your help! have a great day
Awww, you're so welcome!
Your explanation is clear and systematic 👍🏻 Thank You So Much
You are welcome!
Thank you very much!!! Your channel was really helpful.
Thanks for visiting. Don't forget to susbscribe!
Thankyou mam
your videos are amazing thanks a ton.
You're welcome! Glad to help! :)
Omg thank you so much...so simple and informative
Glad it was helpful!
Thank you so much, Ms. Leah; I appreciate you.
You are so welcome!
Good explanation, Keep it up!
Thank you and I'll try :)
Thanx a lot you have made the lesson interesting
You're welcome!
wonderful it's make very easy to understand me soo thanks fisch
So happy to help!
you're a life saver ❤❤thank you so much
Awww, you're so welcome!
Thank you so much even my class teacher won't explained me as easier as you explained...
You're welcome, I'm so happy to help clear things up for you!
Great trick..thanks a lot for sharing this🖒
You're welcome! Feel free to share the video/channel :)
Love from india .😍...very helpful
Glad it helped!
5 yrs ago I was preparing for medschool exams and today after I saw your reply I am passed out from med school. Time flies
Thanks
This video helped me to understand r s configuration.....
You're welcome, happy to help!
This video was so helpful, thank you so much !
Glad I could help!
thanks so much
l love you😘😘😘
you're very welcome!
Really helpful and easy to understand
So happy to help!
Amazing explanation!
Glad it was helpful!
Thank you so much. This was super helpful!
You're so very welcome, happy to help!
Viewer from Arab Republic of Egypt
Awesome! Welcome to my channel!
You are awesome! please keep making more videos
Thanks! I sure will! be sure to subscribe to the channel :)
but what will be the priority order if the chiral carbon has a ethyl group and a ethenyl group?
when there's a multiple binding you double/triple (depending if it's double or triple bond) the number of particles that are connected to the c
I'm sorry, but I don't offer tutoring over social media. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
How wonderful you had been doing as well I'd liked ur style in explication keep going on
Thank you, I will :)
Thanks a lot..that has really helped me
You're so very welcome!
u r just the best.... bless u!!! Leah
Aww thanks!
thanks a lot, this was very helpful lecture. i think my professor prepared from your video but did not convey that good. ;-) , once again thanks.
You're very welcome! I'm glad to hear my video made it clearer for you.
this helped so much omg thank you !!!!
I'm so glad!
thank you so much you help me 😢❤️
You're so welcome!
THANK YOU SOOOO MUCH！！ you are my god❤
You're very welcome, but just a person, not a god. I don't want to be in control of that much! ;)
Thanks mam ,you are doing a great job ,teacher= god 🤗
You're welcome ! :)
that was reaaaly helpful .thank u so much 😍😍
You're welcome, happy to help!
Good explaination
Glad you liked it!
thank you so much ....i'm addicted to you
Too funny! You are very welcome
Do I have to pay to download your worksheets?
Are you referring to the cheat sheets? If so, they are free :)
Really helpful.
Thanks alot .
You're amazing
You're welcome 😊 Happy to help!
Thank you so much!!!!!!♥️♥️♥️♥️♥️
You are so welcome!
AT 11:53 does it matter where you place the hydrogen atom? For instance would there be any difference if you draw to the left of OH? Thanks
Technically the dashes going back should be directly behind the OH group, but then you wouldn't be able to see it. As such it's customary to draw it offset to either side, right or left, to show that it's going away and into the page
your videos are really awesome
Thank you!
If they give you a complicated compound and asked you to find the stereo centre, how would you ID them ? For example morphine
I'm sorry, but I don't offer tutoring over social media. If you ever find you need help with questions like this again, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
God bless you!!!
Thank you so much!
thank you so much!!! helps me a lot!
You are very welcome!
the videos keep saying to follow along with the cheat sheet, but each time i try to download the chirality cheat sheet i get a different email with a link that is not the chirality cheat sheet.
That shouldn't be happening, email me so I can figure out what's going on. Leah4sci.com/contact
Thank u Ma'am
You're welcome 😊
Very helpful!!! thank you :)
You're welcome!
thank you so much Leah!
You are welcome!
So the ranking is based on atomic mass right? Not reactivity?
Neither! atomic number
Perfect thank you! From Germany
You're welcome!
you are an idol mam.. loved ur vedios
Glad you've enjoyed them :)
Why do I remember hearing that you can only determine absolute configuration experimentally?
i think you're thinking of optical rotation
Absolute configuration is R/S. Perhaps you're thinking of relative configuration?
I love her voice
Thanks!
Thank you
You're welcome!
Thank you very much
You're very welcome
tq ....mam u r clear my doubts.
Glad I could help!
I finally understand, thank you
You're welcome!
I didn't understand it in class
But you just made it easier for me
Love you more😘😘
Glad the video helped you understand the topic better! You are very much welcome!
gracias Madame
De nada
Leah4sci.great explanation
Thanks! :)
Thank you!
You're welcome!
Thankyou so much❤
you are so welcome
you said we rank by atomic number in the first few minutes, dont we rank by mass?
Yes. One goes hand in hand with the other. As atomic number increases, so does an atom's mass. Bigger/heavier groups, whichever way you want to think of it, take priority.
Great!
Thanks!
thank u very much taht is awesome
you're welcome!
Thank you leah🤗
You're very welcome!
Awesome!!!! Thank you so much
You're welcome!
clear explanation. thx
You're welcome
Thanks
You're welcome!
So because of isotopes its BEST TO PRIORITIZE THE NUMBERING USING ATOMIC MASS making it more consistent??????
Yes and no. We use periodic table trend/atomic number for simplicity. If and only if faced with an isotope you'd look at mass. I say this because sometimes an atom will have lower mass than a previous atom (rare) and because it's more confusing to have to look up the mass when most orgo professors do not include them on exams.
Could you please elaborate" I say this because sometimes an atom will have lower mass than a previous atom (rare)" I still don't understand, you only explained that its best to use atomic number, not mass because exams use it and that its confusing but Im not talking about test taking, no offense It just seems to make sense if atomic mass is used to prioritize. Until you explain please
Can you please make a video on M and P configuration
I don't know what that is
What if wedge and dash are not given?just simple lines then what should be done...can R and S be found?
If not given in 3-D then you have no way of knowing. Meaning, it could be both
@@Leah4sci Wow!.....was not expecting a reply 3 years later!
I already gave up on chemistry, still...Thank You. Some of your videos helped me.
Thank you so much!
You're welcome!
thank you mam
You're welcome!
So different isotopes are different substituents too in this case. ?
At which point of the video?
@@Leah4sci from 2:34 to 3:58
thanking you
You're welcome!
Thank you very much mam.
You are very welcome