Stoichiometry: Limiting Reactant, Left Over Excess Reactant, Percent Yield | Study Chemistry With Us

[@celesteclass3174]

you have no idea how much this helped especially when having to teach this to yourself for online classes. Thank you so much!

[@Sarah-eb6if]

Celeste Class girl I feel you.

[@natashawarkentin1853]

I can relate too good

[@ashleydalusma3140]

Thank you Melissa! You’re the best tutor out there for chemistry!

[@melissamaribel]

Thank you Ashley!

[@nagawamaxensia1345]

Melissa Maribel, thanks for your time and good lesson.

[@valeriewinter6204]

but i love your classes u make chem extremely understandable.. . u make me want to do chemistry

[@melissamaribel]

Thank you, so happy you are enjoying the videos!

[@dancingintherain3284]

Hey just wanted to say I’m so happy I stumbled onto ur channel bc I have been STRUGGLING with stoichiometry for 3 weeks now (I’m doing online classes so I basically have to teach myself) and I finally understood!! U have no idea the amount of mental breakdowns I’ve had over this and it’s even worse when u have Covid trying to teach urself so thank u 🙏

[@H2Oyum-yum]

I just purchased your Chemistry 1 bundle. I have been spending so much time taking notes that ive actually started to fall behind. Thank you!!!! I feel so much more relieved now that i can just reference your notes and practice the areas I need without wasting any more time! You make chemistry so easy to understand! I don't know what I would do without you.

[@chinmaysworld2065]

Your teaching is fantastic, amazing and perfectly done

[@melissamaribel]

Thank you 😊

[@teabt432]

this was unbelievably helpful, thank you so much.

[@glvillan]

OMG you make Chemistry so easy and enjoyable to learn! You ma'am deserve a raise! Thank you! :'D

[@melaniemartinez8898]

i spent like an hour and a half crying because I didn't know how to find the theoretical yield and kept getting a question wrong. You're a lifesaver omg 😭

[@janinemorada7387]

u make chem less intimidating and fun 💞 sending love from Philippines 🇵🇭

[@MetaLove0000]

Thank you Melissa!!! Simplify chemistry at its finest !!!

[@rediocre4350]

95% of my class did not understand this, me included. My teacher has been teaching this for weeks. So amazing how my level of understanding is higher in 20 minutes than in the past week of lecture. You saved my grade!

[@10002eric]

Thank you so much I have a test tomorrow and I was planning on just dropping out to not take the test but you saved my life I'm ready for the test now.

[@Kissmehauss]

I love how you started with the basics and then layered each step in the process. It really helped tie everything together. Your channel is my official favorite channel. I have watched other educational videos on this same topic, but yours was the best done.

[@curio3]

I'm echoing off Celeste Class, you have a talent to communicate chemistry that JUST MAKES IT HELPFUL. (... as a mature student going back to school and teaching yourself-online ... THANK YOU!) I"m binge watching! ha!

[@dlqlcsk6189]

I was so confused during class but those little sticky notes and your explanations were so helpful!Thank you so much!!!

[@s.howard3864]

Hey Melissa! I LOVE your channel, honestly im learning more from this than my zoom classes. I was wondering if you could do a video on electron configuration with sigma and pi, bond order, and what antibonds are

[@alexial.3512]

I think she's made a few videos on it if you search the topics and her name up!

[@kadabbi2612]

Omg, thank you I now clearly understand this topic. I was so frustrated I didn't understand the whole process, but now thanks to you I will pass my test today. I appreciate all the videos you've made before Thank you :))))

[@yasmine4576]

yo mista

[@lpsddtuff]

Misatooo

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miseltoe

[@joeymarielopez1465]

thank you ms. melissa, i’ll update you when i ace my exam! 💋

[@beefarmbaby-sensoryvideosf116]

I learned so much omg, this was two classes of chemistry that i learned in 30 minutes

[@SteffixBro]

the amount of money I would pay you to sit down and teach me like this omg

[@anjelicapea]

you did more for me in 34 minutes than my chem professor has done in 34 classes - THANK YOU!!!

[@jijijuju9827]

I've been struggling so much with this but your video helped me so much. I really liked how you explained each process throughly. Thank you so much!!!!

[@erin4now]

you're saving my finals grade lol thanks!

[@msa4ever]

thank you so much 😭❤

[@andreaparrado1900]

Thank you for your videos! You are an amazing teacher and your videos help me understand complicated concepts and make them a lot more digestible :)

[@melissamaribel]

You're very welcome Andrea!

[@ryangonzalez1216]

I've been completely lost on this unit and I have a test tomorrow, but this video and another one of yours helped make it click in my brain. Thank you so much!

[@Jerry-dt7tn]

Wow! this video helped me out a lot for my exam preparation, my exam's in 4 hours 😬 !

[@alexmercer2163]

Thank you so much for your videos! I just got my first A on a chemistry exam thanks to you!

[@footballrecapsandcreativit4487]

Loving your lessons

[@el-ry7zx]

Thank you very much Melissa for this tutorial you are awesome. I just stumble on this step by step analysis looking for a better explanation and yours is of great relief I now understand how to approach such questions 🙏.

[@alanisrivera7869]

Thank you so much i think you just changed how my final is going to go tomorrow, huge thanks!!!

[@bobbiebrian6927]

Love the video. Question. Which one of you videos would be the best to watch to get a handle on neg/postive charges and how to determine the metals?

[@spencerwilliams3385]

I am learning grade 11U chem in Canada through TVO ILC learning. The online self-paced curriculum has been fantastic up until teaching about limiting and excess reactants. The 5 steps they outline and related formulas are one in the same yet very confusing as compared to this matrix. Still a bit puzzled about who came up with this matrix but at the very least I was able to get the same answer while following a different method that I can recreate in the future. Thank you!

[@marckr2558]

You just saved my life, thank you so much!

[@victoriazacate8377]

I'm in high school chemistry and I HATED stoichiometry. I kinda get it now. I found your video looking for study materials for my final tomorrow. Thank you!!!

[@aiza2513]

CHEMISTRY QUEENNNNN!!!!💕💕 Major love from Saudi Arabia

[@nadineebada6557]

hi from jeddah!!!

[@cyplo]

I got a 102 on my exam because of this, thankies!

[@Bluedd125]

I love your videos, you are saving me with Chem and saving my pockets. Only if my professor taught like you my life will be easier .

[@scientificbhaiya9336]

A trick to find the limiting reagent can be like this. Find the number of moles of reactants given by the given amount in gm, then divide it with the mole coefficient of balanced equation for that reactant. We will get the smallest ratio for a reactant then, that is our limiting reagent. We will not have to calculate that long. Although really nice explanation by melissa.👍

[@redemptioncobby736]

you make have the love of chemistry each day ❤❤❤❤❤❤❤❤❤

[@PiaMalmberg86]

Thank you Melissa for doing these videos, they are super helpful! Quick question, what tools do you use to write things in this video for the screen share and quick editing? Again, love you work! It's currently helping me through uni so thank you so so much!

[@NomceboMandisa-mi7ht]

You are the best 🤗💓

[@Kissmehauss]

Thank you so much!!

[@SoloJedi_]

WOW WOW WOW. Amazing!!!!! Why can’t/don’t college professors teach this way

[@olawaledele4377]

thank you so much , just watching your video and it solved my problem, you're the best

[@md.shahriarkabirshishir3376]

That was an awesome video to learn about reluctant

[@sopchan3554]

Melissa pls do more vid about chem u help me a lot ilysm!!!!!

[@lolawilson1027]

Your videos are helping me pass Chemistry especially during these crazy times lol

[@FedalizoClan]

Thank you! This is so helpful

[@The.Life.Living.Travel]

Thanks Ma'am It's very useful to us

[@cherishaugust3384]

Using this to study for my Chem 1010 exam!!

[@adege663]

Thanks!

[@najifaanjum3324]

In the last part of the problem, can I not use the limiting reactant (FeCl2) to find out bow much of the excess reactant we need for the reaction? I've done it this way before, but now my answer is not matching and I'm checking the steps over but can't find anything to change. Edit : I found my mistake. It was a silly one.

[@mohamudomar5828]

Figure out the limiting reactant and use it to find theoretical yield. Theoretical yield is the amount of product that can be produced from the limiting reactant.

[@muhammadehsan5139]

Exceptional Nice Job Your Way of Teaching is easy Interesting Absolutely Brilliant 👍

[@aiza2513]

Plz don't stop posting videos, we want more videos on more topics😭😭!!!!!!!!! You are a fantabulous teacher!

[@sabriellatif]

Thank you, Melissa! You've helped plenty than what my 3 hours lecture have taught in just 30mins! Scored an A in my uni chem class :> Definitely recommending you to all my juniors!

[@danwill9467]

I might actually pass my quiz today because of you, not that my teacher isn't good, but when you explained it, it was just so much clearer 😅

[@NNatalieVlogs]

How’d you do on your exam?

[@joshuamensah9309]

Thankyou for this video, excellently explained!!! :)

[@TubeCritic]

What I have a hard time understanding is why each value is the numerator vs denominator. For example why do we put 1 mole of FeCl2 over 126.75 grams in the first step instead of 126.75 grams over 1 mole of FeCl2 and same thing for all the other values there after? How do i know which to put as the numerator and which to put as the denominator?

[@69Paulita]

The ending unit that is to be the final answer should always be the only unit (s) that do NOT cross out. ex: How many seconds in 4 and a half hours? 4.5hrs-- (60min/1hr) (60 sec/1min) =( here we can cross out the units of hours, and units of minutes. What we are left with is only the unit of seconds. We multiply across, and the answer is : There are 16,200 s in 4.5 hrs. Same exact concept with conversions in chemistry. The unit we intend to end up with should be the only one that doesn't completely cross out, and the conversions should start with the first conversion having the unit you are wanting to remove placed at the bottom of the fraction, so it crosses out. Hope this makes sense? It may not be exactly what you are asking, but the concept is always the same when it comes to the ending units. Hope you figured it out by now though!

[@mohammadschool1968]

In other video it says u go from the limiting reactant to the excess is that true ?

[@arakita9308]

Is it possible to calculate for the excess amount of excess reagent if the problem only include the mass of only one reactant?

[@vKRALICE]

Can you show how you can solve this using cross multiplication method instead of unit analysis

[@ashleycadet1578]

Seeing her actual personality outside of the regular videos is so weird but cool at the same time, lol back to the chemistry

[@yusratanweer4157]

thank you thank you thank you so muchhh

[@Cheer750]

Hello Melissa, I was wondering, I am in Gen chem 2 college level and I watched your titration and buffer video and it was explained excellent. However I was given this titration problem and I was really wondering if you can go through it? I am wondering how should I go about asking you this ? thank you so much! A 0.125 M solution of sodium hypochlorite. A 50.0-mL sample of this sodium hypochlorite solution is titrated with 0.125 M hydrochloric acid (HCl, strong acid) at 25 o C. What is the pH of the solution after 10 mL of HCl has been added beyond the equivalence point of the titration. Sodium hypochlorite is a basic salt, with the formula NaClO, and the acid ionization constant of its conjugate, hypochlorous acid (HClO), is 3.5 x10-8 at 25 o C.

[@jackkttaylor9324]

this why im majoring in political sciene, yall do too much numbers ong

[@allys103]

how do you know to write down “1 mol” or 3 mol” as shown in the first problem for example? why is the first FeCl 1 mol but the second is 3 mol? and why is NaCl 1 mol?

[@caramelapples6821]

i was confused on this too but I think it’s because it’s saying for example if you have the equation: 2Fe + 3Na -> 4FeNa (I made this up) The ratio between moles will be 2:3:4, so when doing dimensional analysis you are saying that when multiplying between moles the ratio of 2 moles of one element means that the other element will have 3 moles. So for that specific part in the problem when she used one mole instead of three moles it’s because the grams for that element are based on one mole not three. But when multiplying between moles of those two elements it using two and three because that’s the ratio between them and you’re trying to find how many grams or moles are in those elements with those specific moles. So when she used one mole she was trying to find the amount of grams are in one mole of that element, and when she used three moles that’s when she was trying to convert that grams to the amount of moles in the problem. I’m not sure if that made sense at all, I’m trying to make it make sense in my head and put it into words sorry if that didn’t help

[@aprvurmom]

What note taking app do you use?

[@calvinwyd]

Thank You... Thank you so much

[@DrMasi]

Good Job

[@melissamaribel]

Thank you!

[@dezvaldez143]

The memorization tip 😂, I’m gonna memorize for sure. My chem professor literally just told us not to memorize, because we have to understand what’s happening!!!

[@curtissarthur5053]

W teacher fr

[@anuragprakash2450]

Mam please answer how much of other reactant sho

[@kervmari521]

Hi Melissa! I love your videos, but there is a part that confuses me. Should we really use the Theoretical Yield to calculate the mass of consumed excess reactant? I compared your videos on Limiting reactants to other videos. And I found out that they use the given value of limiting reactant to calculate for the mass of consumed excess reactant. Help! i'm on the verge of confusion now):

[@aylinsaenz9932]

Hii, just watching your video…what if it is just asking what is the Limiting Reactant without specifying the product they want?

[@susipineres2862]

queeen!! thank you

[@callieg15671]

I love you😭

[@mark0032]

Virtual bro fist Mellissa 👊 Thanks again!!

[@sivachandranirmalathas5416]

Thank you

[@melissamaribel]

You're welcome

[@marshaalig3074]

Help me pls Calculate the mass of titanium (IV) chloride produced by the reaction of 3.25 grams of Ti metal and excess chlorine based on the reaction. (Atomic mass: Ti = 57.9 amu, Cl = 35.5 amu.) ​

[@mohammadschool1968]

so if they ask us how much is ur limiting reactant what would that be ?

[@haninDaline87]

You can put a dot after 0 to count 0

[@valeriewinter6204]

hi maam is there a way of contacting you for some help..Im struggling with a few topics

[@melissamaribel]

Hi Valerie, unfortunately no, but I am happy to direct you to other videos I have on these topics. What topics are you struggling with?

[@valeriewinter6204]

@@melissamaribel wellll i haven't started with my studies but i will be, soon. I however have the syllabus and im studying in advance to not suffer ..lol..but im struggling with solution stoichiometry..composition of solutions andassighning oxidation numbers balancing redox reactions in basic and acidic media. im sorry iff its too much though im not lazy but your vids are really what i turn to. thank you for replying btw

[@melissamaribel]

That's great that you are getting ahead! I have several videos that can help. Whenever you want to find a video of mine type into the youtube search bar, the topic followed by my name. For example, searching "balancing redox reactions melissa" and all my videos will show up.

[@valeriewinter6204]

@@melissamaribel ok thank you maam ..when i go to varsity and theres something i dont understand and its not on your channel, ill try my best to contact you.

[@reagangowen1512]

Do you still tutor?? I would LOVE to FaceTime before my final!

[@vanessapradhan7148]

hey love your channel you make chem easy to understand. although im currently STRUGGLING with polymers could you please make a video on them whenever you have time :)

[@caramelapples6821]

I’m confused on what actual yield is and how to find it does anybody know? Like how do you find actual yield when it isn’t given in the question

[@penelopekristan5860]

Did you find out yet?

[@nahed2000]

How did she put 21? Why she used sig figs?

[@taryng.8863]

Do you have tutoring classes students can pay for? Like this is so helpful!

[@laurentjeromekwai9445]

What is limiting reactant and excess between those two reagents . i didn't hear it exactly 😭

[@ericlin5457]

so basically u can't find the percent yield if they don't give u the actual right

[@melissamaribel]

Correct

[@Sarah-dq9vh]

When she pulls out the calculator at 17:25 Me an Indian - "That is against the law." . . I loved your video though, that was just a joke. Thank you❤️

[@cappycapyt]

Watching this mins before exam ,,😂

[@user-bw7ur7uc8q]

‏Hello, please. Can you make a video on reaction of metals with water and steam because I have a test soon and I follow you from UAE I knew your channel through a school because they are showing your videos to us to learn from them and thank you♥️♥️♥️

[@aalayjawashington]

i love you

[@danielatorresmalaga3601]

Is she in chem 101 ?

[@isabella-sv8jp]

I have a test in 7 minutes 🙃

[@Cheer750]

For the titration video you were running out of time so you didn't show how to do the titration after equivalence point.

[@hourray028]

thank you so so much ❤‍🩹

[@serene_belle]

Thank you