Thank you! This was great! For those that complain of the video not making sense, hit the pause button so that you can write down all of the things she has written down prior to turning on the camera. Run it back whenever there is something you don't understand. Have a periodic table, a calculator, pen/pencil, and notebook handy. I promise you, if you take all of these steps, you will no longer be confused. Good luck!
Thank you so much! I don't know if it's my professor's teaching method or just my lack of taking a chemistry course since high school, but I couldn't grasp how to do it in class. You have no idea how much this video has helped me! :D Keep up the good work!
That's what the pause button is for. The people at Brightstrom make very good videos, because they don't go overboard with information. They give you small bite size pieces of information which allows you to digest & really learn the concept. I think her talking speed is fine!!!!!
I have a huge test tomorrow, and I studied this last year but was having a hard time on my own remembering perfectly. HELPED SO MUCH!!!!!! Thank you!!!
thank you soooo much, i have a huge chem test tomorrow and i finally get how to do this!! what also helps with the limitingreactant it to think about it wit hot dogs and buns, because they NEVER make the same # of hot dogs as they do buns so thats how it was first explaned to me and i found it more helpful than the bike shop one. Thank you so very much!!!
I was absent for a whole week because of my surgery, and I missed out on a lot. My chemistry final is in 5 days, and you are literally saving my GPA. Thank you!
Takes 2 wheels per bike. 20 tires/2 equals 10 sets needed, thus all of the tires are used, and then you divide the 15 seats by the 1 seat needed per bike and you get 5 left over. An easier way to get the answer is to take the minimum needed (2 wheels per 1 seat) or 2:1. Multiply until one of the parts to make the bikes needs more to keep on going, which in this case is 10 (10x2 wheels=20) and then go from there.
With the Chem final incoming in 1 1/2 weeks, your videos have become my life saver. I enjoy the ease of the way the material is explained. Thanks for the Hess's Law too ^^
Wow, this was easy when you know how to do it. My teacher taught this a completely different, more complicated, and confusing way. Thanks for the video.
I've been struggling with my chemistry teachers ways of "teaching" ( I put that lightly) but seriously this and the percent yield helped me understand more than what my Chem teacher has tried to teach us for weeks with only few understanding. I thank you for the help ☺️
Thank you for all of your Chemistry videos. It's a great help to understand the concepts and review before exams. You do a great job of explaining as well. Wish me luck on my finals tomorrow :)
Find the mole first between the reactants and compare. Then find iron using the limiting reactant mole and to find the product mass use the mole X mr or ar
Thank you so much for this! We've been doing stoichiometry in my chemistry class, and I didn't understand this at all. It makes sense now; your videos are extremely helpful. Thank you!
key words for me when dealing with the end part of the excess reagent: looking at periodic table. i wasn't sure wheather to use the mass of the excess given or to use mass from table THANK YOOOOOUUU!
Don't forgot that you are limited by the nitrogen, wait I mean hydrogen. WAIT, I mean ammonia.. WAIT it was actually hydrogen. I'm kidding it is nitrogen.
correct me if i am wrong or right i thought you get the limiting reactant by doing the #moles (given for that certain reactant) / the coefficient in the balanced equation?
Thanks a lot, I learn this better than the previous video I watch ^^ But question, for example they only gave you a chemical equation without any mass given, how do you identify the Limiting Reactant or Excess? Example: 2NO + O2 --> 2NO2 (How do we know that NO is the LR?)
I am so grateful for these videos. You explain everything so well and make me so confident about the material. You are a very good teacher and I think youtube can also be a great medium for education as opposed to just entertainment.
It's nothing confusing it's not a chart it's called the mole method, it may be more complicated than the proportional method but for me personally i use the mole method all the time,and since using these methods just give the same results you can just use whatever method your comfortable with
she means the result, which is 115g, is larger than the given mass, which is 100g. So, since the result is bigger than the given mass, Fe2O3 is limiting. If we had the opposite, let's say that the result was 60g instead of 115g, then Na is limiting. I was lost too but now I got the idea.
please do use a darker marker or consider replacing it from time to time! Sometimes the written text becomes too light. Otherwise awesome lecture Thanks.
An Indian Dr. is teaching me CHEM at college .. he lived in Japan around 15 years!! now we are suffering from his accent he is teacing us in ENGLISH , but his his speeks is not understandable Indian Language and accent + English accent + Japanese accent = ****** I hope you're teaching me there thanks for the video :)
I was wondering if by chance you wanted to measure these reactions in mircos or mils instead of grams could you do so and how would you go about doing it . Because these measurements are so small . Pipetteing 10 mircos or mills is alot smaller than a gram . The reason why I am asking this question is because I was wondering if chemical reactions could be done on this type of scale without the use of spealized equipment . And if so do you guys go into explaining this . ( like hoods surpressers )
This is not the first video I watch from you. You are very good at exclaiming the lessons. However, I have read many comments on how fast you talk. Please take these comments as constructive criticism and fix it for your future videos. Remember that You Tube is universal and not many people understand english very well (not my case, but I'm talking for others) and you speak way too fast, so fast that you trip on your own words. You know your stuff... slow down a bit! Thank you!
@newbornbabyinvasion2 the chart is implying multiplication. replace the box's vertical line with parenthesis's. All mole math problems are just giant unit cancelation problems. Thats why we multiply by different ratios of one. The goal is to cancel each prior unit until you get to the unit that is desired. Grams-Moles-Moles-Grams. In the word of Mr. Drews. His site for chemistry will be the first link if you search kdrews47 chemistry. It's a free site for chem. TH-cam is a good supplement. :)
It couldn't be any simpler than the way she does it. It's the way I learned it and it's incredibly intuitive, plus you do all your calculations at once so there is less room for error as opposed to breaking the problem up into more, smaller equations.
I think that's just because you probably never learned to do chemical calculations that way... Neither have I, so it looked really complicated in the beginning to me too. But now I actually realise that this method is really easy and leaves little room for silly mistakes.
Why is N2 your Excess reactant when it only has a coefficient of 1 and why are you calling H2 your limiting reactant when it has a coefficient of 3? You are not explaining this very well. Could you have shown the molar mass to moles conversion to show this?
+Matthew Barnett You must have really good ears if you watch her video at 1.5x. Did you know you can watch all our chem videos on our mobile app? Check it out if you're interested. Android - bit.ly/1QZmqfN, iOS - apple.co/1N7RZSZ
Thank you! This was great! For those that complain of the video not making sense, hit the pause button so that you can write down all of the things she has written down prior to turning on the camera. Run it back whenever there is something you don't understand. Have a periodic table, a calculator, pen/pencil, and notebook handy. I promise you, if you take all of these steps, you will no longer be confused. Good luck!
I have learned more from you than I ever have from my teacher; you are a gift sent from the heavens. Without you I would be failing chem. THANK YOU.
professors should definitely come up with more analogies during lecture classes. The simple bike analogy helped me understand this 100 fold.
Thank you so much! I don't know if it's my professor's teaching method or just my lack of taking a chemistry course since high school, but I couldn't grasp how to do it in class. You have no idea how much this video has helped me! :D Keep up the good work!
That's what the pause button is for. The people at Brightstrom make very good videos, because they don't go overboard with information. They give you small bite size pieces of information which allows you to digest & really learn the concept. I think her talking speed is fine!!!!!
I have a huge test tomorrow, and I studied this last year but was having a hard time on my own remembering perfectly. HELPED SO MUCH!!!!!! Thank you!!!
seriously.. I wish my instructor would have explained it this clear 4 weeks ago.. final is tomorrow and I finally get it!!! Thank you sooooo much!!!
thank you soooo much, i have a huge chem test tomorrow and i finally get how to do this!! what also helps with the limitingreactant it to think about it wit hot dogs and buns, because they NEVER make the same # of hot dogs as they do buns so thats how it was first explaned to me and i found it more helpful than the bike shop one. Thank you so very much!!!
I was absent for a whole week because of my surgery, and I missed out on a lot. My chemistry final is in 5 days, and you are literally saving my GPA. Thank you!
THANK YOU SO MUCH FOR HOW THOROUGHLY YOU'VE MANAGED TO EXPLAIN! Seriously amazing job.
Takes 2 wheels per bike. 20 tires/2 equals 10 sets needed, thus all of the tires are used, and then you divide the 15 seats by the 1 seat needed per bike and you get 5 left over. An easier way to get the answer is to take the minimum needed (2 wheels per 1 seat) or 2:1. Multiply until one of the parts to make the bikes needs more to keep on going, which in this case is 10 (10x2 wheels=20) and then go from there.
With the Chem final incoming in 1 1/2 weeks, your videos have become my life saver. I enjoy the ease of the way the material is explained. Thanks for the Hess's Law too ^^
AFTER ALL THESE WEEKS ALL IT TOOK WAS 5 MINUTES!!! THANK YOU!!!
thank you! i've understood everything in this unit up to limiting reactants and this was so helpful!
Wow, this was easy when you know how to do it. My teacher taught this a completely different, more complicated, and confusing way. Thanks for the video.
This video helped a lot I learned more by watching your video than in class!! I think I can do well on my exam today!! Thanx for all the help
thx. i was absent at school and my teacher was being very uncooperative.
You're awesome at explaining this. These videos put all my lectures I go to to shame.
I've been struggling with my chemistry teachers ways of "teaching" ( I put that lightly) but seriously this and the percent yield helped me understand more than what my Chem teacher has tried to teach us for weeks with only few understanding. I thank you for the help ☺️
I'm also subbing
The chart is the use of a method called dimensional analysis. VERY USEFUL!
Thank you for all of your Chemistry videos. It's a great help to understand the concepts and review before exams. You do a great job of explaining as well. Wish me luck on my finals tomorrow :)
You're welcome. Hope you did well in finals.
I've struggled with this for the past week, now I finally understand it to pass the test tomorrow.
thank you for these awesome videos! im starting to get the suspicion that my teacher knows as much as i do. these videos are a life saver!
This helped me SO much! Thank you!
BEst lesson ever. i am studying for my MCAT and your classes Are Awsome thank you
Find the mole first between the reactants and compare. Then find iron using the limiting reactant mole and to find the product mass use the mole X mr or ar
i wish you were my teacher! seriously, i watch your videos after like every class
Thank you so much for this! We've been doing stoichiometry in my chemistry class, and I didn't understand this at all. It makes sense now; your videos are extremely helpful. Thank you!
I love you! Thank you for these videos!?! Limiting reactant makes so much more sense now. I like the bike analogy, very useful.
Sweet baby Jegus, this helped so much. Kinda sucks that I didn't know about these videos until the night before the final...
Thank-you, you have helped me with my chem review for my final
Love the videos! Very easy to understand and helpful to review before a test.
check out some vids on dimensional analysis. The chart is just a different way of writing it, she is just multiplying fractions.
awsome video! you do a great job of breaking it down and keeping it simple
key words for me when dealing with the end part of the excess reagent: looking at periodic table. i wasn't sure wheather to use the mass of the excess given or to use mass from table THANK YOOOOOUUU!
I have my Chem exam TOMORROW and I still don't know how to do this I hope this helps ;_;
Don't forgot that you are limited by the nitrogen, wait I mean hydrogen. WAIT, I mean ammonia.. WAIT it was actually hydrogen. I'm kidding it is nitrogen.
correct me if i am wrong or right i thought you get the limiting reactant by doing the #moles (given for that certain reactant) / the coefficient in the balanced equation?
Happy Finals week! May the curve be ever in your favor.
thank you for using a T chart it seems like no one on youtube ever does
it helps a lot, can you make more videos in different chapters also. thanks.
praise these people and these videos
She doesn't really explain it. She just does the work
Thanks a lot, I learn this better than the previous video I watch ^^
But question, for example they only gave you a chemical equation without any mass given, how do you identify the Limiting Reactant or Excess?
Example: 2NO + O2 --> 2NO2 (How do we know that NO is the LR?)
THANK YOU, you are an amazing teacher!!
I am so grateful for these videos. You explain everything so well and make me so confident about the material. You are a very good teacher and I think youtube can also be a great medium for education as opposed to just entertainment.
It's nothing confusing it's not a chart it's called the mole method, it may be more complicated than the proportional method but for me personally i use the mole method all the time,and since using these methods just give the same results you can just use whatever method your comfortable with
hell yeah, its always nice to have another lefty in the house
I find it funny that down here in Texas, were doing this shit in Pre-Ap chem, lol. Does it go more in def in Ap chem.
AMAZING BRIGHTSTORM
she means the result, which is 115g, is larger than the given mass, which is 100g. So, since the result is bigger than the given mass, Fe2O3 is limiting. If we had the opposite, let's say that the result was 60g instead of 115g, then Na is limiting. I was lost too but now I got the idea.
this makes so much sense now!!!! thank you!
please do use a darker marker or consider replacing it from time to time! Sometimes the written text becomes too light. Otherwise awesome lecture Thanks.
you are a very helpful person and thank you not enough
making the table was really helpful
what are u gonna use? Your teacher's method or her method? just curious cuz im stuck in the same situation. 0.0
An Indian Dr. is teaching me CHEM at college ..
he lived in Japan around 15 years!! now we are suffering from his accent
he is teacing us in ENGLISH , but his his speeks is not understandable
Indian Language and accent + English accent + Japanese accent = ******
I hope you're teaching me there
thanks for the video :)
at a private school in switzerland, the way we do it in GCSE's and DP program, is so much different. no idea what the hell that chart is.
this is awesome and very clear.... Im not sure what u guys r talking about
Maybe not the best to learn from, but as a review it epic!!
I was wondering if by chance you wanted to measure these reactions in mircos or mils instead of grams could you do so and how would you go about doing it . Because these measurements are so small .
Pipetteing 10 mircos or mills is alot smaller than a gram .
The reason why I am asking this question is because I was wondering if chemical reactions could be done on this type of scale without the use of spealized equipment . And if so do you guys go into explaining this . ( like hoods surpressers )
The table method you use to do your calculations confuses me. Is there another video where you first used this table method? I'm unfamiliar with it.
Thank God for TH-cam
I actually like her speed.
Thank you for that, I really needed the help, for chemistry
This is not the first video I watch from you. You are very good at exclaiming the lessons. However, I have read many comments on how fast you talk. Please take these comments as constructive criticism and fix it for your future videos. Remember that You Tube is universal and not many people understand english very well (not my case, but I'm talking for others) and you speak way too fast, so fast that you trip on your own words. You know your stuff... slow down a bit! Thank you!
ahhhhhhh. beautiful explanation!
Thank you it helped me out a lot
Hi,
If i have three reactants, is it possible to have 2 excess?
the seat drawing looks like something else
Amazing. I now know how to do this. Thanks!!!
in the second equation she does, why does it go to Fe in the end and not Na2O?
great explanation
@newbornbabyinvasion2 the chart is implying multiplication. replace the box's vertical line with parenthesis's. All mole math problems are just giant unit cancelation problems. Thats why we multiply by different ratios of one. The goal is to cancel each prior unit until you get to the unit that is desired. Grams-Moles-Moles-Grams. In the word of Mr. Drews. His site for chemistry will be the first link if you search kdrews47 chemistry. It's a free site for chem. TH-cam is a good supplement. :)
thank you so much only good video I could find!!!! explained it extremely great!
Ammonium is NH4 correct?
Never assume that the reactant with the lesser amount is the limiting reaction.
Your squeaky marker is giving me the chills. I hate that noise.
I learned more in 3 videos then 3 weeks sleeping in a boring ass chem class.
Thank you so much!!! I actually get this stuff now!!! I got it!!!
my teacher taught us differently but i got the same answer in his sample problem when i used your method. thx, i guess??
This is AWESOME
The way you write it on the board makes it look way more confusing than it needs to be...
It couldn't be any simpler than the way she does it. It's the way I learned it and it's incredibly intuitive, plus you do all your calculations at once so there is less room for error as opposed to breaking the problem up into more, smaller equations.
I think that's just because you probably never learned to do chemical calculations that way... Neither have I, so it looked really complicated in the beginning to me too. But now I actually realise that this method is really easy and leaves little room for silly mistakes.
SO helpful!!
FINALLY. THANKS!
Why doesn't Brightstorm buy whiteboard markers regularly?
Is it safe to say that the reactant with the lesser amount in the equation is the limiting reaction?
ı learn everything exactly 1.04 :D very good example to understand this complex information :D
much better than my chem class no doubt, but slow down your talking in future videos?
Now I might pass my chemistry test in first period
Thank you so much - great video! :)
awwwsomme !!!!!!!!!!!!!!!!!!! i alwayz lyk brightstorm vids ! they rock like HELL
This has really helped! Was that a Owl I heard halfway through the video? Haha
The chart is just used to convert the different reactants into moles and so on
Why is N2 your Excess reactant when it only has a coefficient of 1 and why are you calling H2 your limiting reactant when it has a coefficient of 3? You are not explaining this very well. Could you have shown the molar mass to moles conversion to show this?
lol everyone asking her to slow down and im over here speeding the video up by 1.5
+Matthew Barnett You must have really good ears if you watch her video at 1.5x. Did you know you can watch all our chem videos on our mobile app? Check it out if you're interested. Android - bit.ly/1QZmqfN, iOS - apple.co/1N7RZSZ
Thank you so very much!
Gr8 video, gr8er than what i learned in school
what about no limiting reagents. or consumes first is not the limiting reagent
Saved ma life