Solution Stoichiometry - Finding Molarity, Mass & Volume

[@TheOrganicChemistryTutor]

Stoichiometry - Free Formula Sheet: bit.ly/3Z7uMw8 General Chemistry 1 Review: bit.ly/3DNmZqb Print The Exam - 160 Questions: bit.ly/3VTpcbj Chemistry 1 Final Exam Review: kzbin.info/www/bejne/a6raYox-bL50bcU

[@davidrenteria9585]

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[@FromMeToYou022]

Thank you for being a life saver. You explained this lesson better in 24 minutes than my teacher who taught us for days.

[@cerberustv7234]

I agree with this lmao

[@ANTSPlantation]

yep, my teacher kinda bad at teaching.

[@WobblesandBean]

Same. My professor is kinda garbage.

[@JESSABELLEMALALUAN]

@@WobblesandBean how do i know from the word problem that it will be a DOUBLE DISPLACEMENT ?

[@nancydrew666]

I never want to see AP Chem ever again

[@SA-be1bn]

Wait until you do physics lol

[@nancydrew666]

@@SA-be1bn Luckily I don’t have to

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[@lucapeluffo723]

Holy fuck imagine me that took AP Chem during covid and only had it for 6 months. Currently reviewing for the AP test and its a struggle

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Passed

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I need this too because I am on the verge of failing the class, congrats to you!

[@georgesadler7830]

Professor Organic Chemistry Tutor, this is another outstanding video/lecture on solving Stoichiometry problems in AP/General Chemistry. Although the problems are similar, writing the Chemical Equations and solving them can be problematic from start to finish. This is an error free video/lecture on KZbin TV with the Organic Chemistry Tutor.

[@bellac8195]

I was struggling with the steps on my chemistry homework, but watching this video made everything clear! Thank you so much for all you do, it's deeply appreciated!

[@sleepyman3019]

Bro im about to go into a stoich test and this video is saving me

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[@Raantas]

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[@alisa3716]

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[@lukeh1853]

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you are a lifesaver!! you make it all look so easy

[@its.shanti]

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[@azulandreablanca8198]

I understood perfectly. Thank you so much, coming from a stressing 10th grader

[@TheLucanicLord]

8:51 The other way to think about it is to put the stoichiometric number _under_ its own side, like (M1 V1) / S1 = (M2 V2) / S2. You can then see that if it's twice as "good", you only need half as much. Because quantity has a quality all of its own.

[@lukegailitis9222]

love your stuff help me out of some tough problems in chem

[@aprilreighntayag4316]

Thank you for existing

[@thirisharadhakrishnan5341]

In question 2, why were the coefficients switched? Shouldn't there be 2 KI for every 1 Pb(NO3)2, so M1V1=2(M2V2), as in more of KI in comparison to PB(NO3)2 and not the other way 2(M1V1)=M2V2

[@anon102]

Yup he got that one wrong

[@starjumperrr]

we are trying to make it equal on both sides. so if there is 2 mol KI for every 1 mol Pb(NO3)2, we have to multiply the side relating to Pb(NO3)2 times 2 to make the moles equal

[@moonamclnggn]

Thank you so so much for this video! This will help me for tomorrow's test.

[@yal-frenzy7589]

9:00 self time stamp don't mind

[@sumeyaibrahim7260]

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[@sofzhuk1188]

my lab is due soon and you saved me

[@kenrock6136]

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[@awkwardkoreanboy]

Quick question, does the order of the chemical equations matter? For example, in problem 2, you wrote out Pb(NO3)2+2KI -----> PbI2+2KNO3. Would the opposite (2KI+Pb(NO3)2 -----> KNO3+PbI2) be incorrect?

[@spookypenguinsoldier8595]

awkwardkoreanboy no either way works

[@Eyeh8t3leyef3]

I was going to respond but, I’m a little late for that lol. Short answer though, no. As long as you multiply both sides of the fractions correctly then divide, you’re all good 😂.

[@chi_chi6738]

Very late😂😂

[@yishaogu4936]

For problem #4, isn't Calcium Chloride the excess reactant and Sodium Phosphate the limiting reactant, so how did you get less product from calcium chloride then sodium phosphate?

[@sadgemain5220]

that's what im confused about too. he used the excess reactant to calculate, i think he did it wrong. the actual answer should have been 1.44 g since you would have needed to use the LR

[@xtomy_887]

@@sadgemain5220 He says at the end that the answer is the one that came from the LR

[@_linylienne_7787]

You saved my life again 🥰

[@YCARTNG]

I don't still understand

[@peacewonder1856]

I just want to ask on the 4th question, why did you use sodium phosphate instead of calcium chloride to find the mass of calcium phosphate produced?? Because in the reaction, sodium chloride was limiting... Please explain, maybe I'm behind. I'll really appreciate it Sir. Thank you

[@rahilpatel1459]

you have any practice exams for the finals besides the review?

[@zstephen5828]

9:49 you are forgetting the significant digits here. shouldn't M be 0.13 instead of 0.1277 because all the given numbers in the question contain 2 significant digits(i.e. 37 mL, 42mL) ?

[@elainegou]

ye

[@dontmindme4466]

the rounding could be done at the end. it wouldn't compromise the accuracy if you round all at the end.

[@sadgemain5220]

sig figs have been around for 16 years, they're absolutely useless compared to the grand scheme of science

[@JunkoMay]

How to get the mass if p value and volume is given? (this topic is under P function)

[@doesjuminhanisgay2031]

Im starting to have a love-hate relationship with chem

[@emelye8504]

when your balancing, do you assign the coefficients through charges on the periodic table? Or oxidation numbers?

[@dontknow7863]

when you are balancing equations you need to have the same amount of atoms on each side. so for example: Fe + HCl >> H2 + FeCl2 = Fe 2HCl >> H2 + FeCl2, so now you have 1Fe atom on each side 2H atoms on each side and 2Cl atoms on each side.

[@emelye8504]

@@dontknow7863 thanks!!

[@Gentleman139]

What is the 1 under the L in the dimensional stoichiometry? It's 0.055L over 1 mol, right? Why don't you cross out 1 for mol?

[@germenietogbah7947]

so good for learning

[@Lusungu-z4x]

Me watching this after 7 years😢

[@BlancaLazo-j9f]

I had a question about how you know which value to use first to begin the set up of the problem :)

[@zandilentuli7115]

In the second question with lead (II) nitrate, why wasn't the volume converted to L in the M1V1=M2V2 calculation?

[@krisssssssu]

You can just keep it mL if you want your answer in mL

[@zandilentuli7115]

@@krisssssssu thank you

[@gaurishagrawal9404]

For number 4, isn't CaCl2 the limiting reactant?

[@acastacie3362]

yeah that’s what i was thinking

[@3runjosh]

you don't explain how you chose which compound goes to M1V1 and M2V2 at 8:30

[@MoghlordOfblood-rc2lw]

Shouldn’t you have needed a new molar mass for the 2nd th yield in the last question? You used the mass of 2Na3PO4 instead of 3CaCl2 which is the molecule being used to calculate the mass

[@xXAlmdudlerXx]

Can the formula m1v2=m2v2 always be used or only when the ratio of the reactants is 1:1?

[@coolwhipjw22]

^^

[@justme-jj2bw]

8:40 in video

[@alaakahla4566]

What about the significant figures?

[@Frowlfrowl]

In n.4 in the problem solving is the smaller ALWAYS the answer?

[@elimal2605]

Xensin ywp

[@vid8301]

why did he have to move the co efficient? @ 9:32

[@yk11111-m]

wait isnt the second equation your're using dilutions? is it the same

[@andrewnicorn]

Omg thank you my friend.

[@jocyurrutia7036]

literally God bless you

[@byronmarquez4046]

Why did he convert liters to milliliters for the final answer on question number 1, liters and milliliters are both volume, right? and the question is "what volume..." Thank you!

[@byronmarquez4046]

@Har M thank you! 🤗

[@jhonbob133]

On the second question why haven't you changed ml to L Though tnx for the detail explanation

[@rafalhabib7580]

what would we do without you :,(

[@ezu8501]

THANK YOU. I LOVE YOU.

[@bradk7882]

Is the math wrong at 20:06? I'm getting 18.6 grams

[@venuss.7218]

but isn't the first question asking for 2 sig fig...? answer should be 37.mL if you do the sig fig correctly from the very beginning

[@michaelbermudez2496]

not sure if they asked for sig figs but you definitely have to wait till the end to apply the sig fig rules and round up or down

[@leeluscious2354]

I'm here again teacher

[@Callixto28]

16:23 how did Na3 have the same charge with Cl2?????

[@yishaogu4936]

It doesn't. I don't know where you got that. Chlorine and Sodium have charges of -1 and +1 respectively. Which is why NaCl can be formed.

[@onemorewarcrime]

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[@FatimaAli-dc7oh]

going to die from all the ads

[@axium9328]

We we have molarity in IGCSE level?

[@olympiadleague8584]

you are the best one thank you

[@nurain2843]

Do u have topic periodic table about ionization energy and what so ever??i did not understand about the topic... I hope u can help me...

[@TheOrganicChemistryTutor]

Yes - Here is what I have on it: kzbin.info/www/bejne/faqceYVsaqmjj7M

[@nurain2843]

The Organic Chemistry Tutor thanks

[@bennettegaper4344]

Thank you. No wonder why i keep on getting wrong answers because i don't balance equations

[@razasyed575]

thank you sister

[@IndesirableShadow]

thank you sir

[@mahmudulhasanrussel2673]

Best Superb

[@HamD7676]

I have a problem that has two separate reactions and I don’t know how to solve it.

[@xanderxander3132]

Thank you 🙏

[@ks6043]

ok, so why do we flip around the coefficients when using the c1v1->c2v2, and why dont we convert the ml into L?

[@anissgacem4362]

For the mL or L you can do as you please so long as the question asks for either. For m1v1=m2v2 I'm not really sure, but the reactant ratio should have an effect on that formula.

[@gidibobo37]

Thankyou❤😊

[@cleopatra8734]

m1v1=m2v2 is not working for some reason

[@ericcoombs2707]

Life saver

[@mhdsaleh5448]

truu hero 🦸‍♂️

[@kylejashen4702]

guys i have a question for the formula m1v1=m2v2 .. how do you know which substance is for m1v1 and which one is for m2v2?

[@Icterone]

Any

[@beacansicio6053]

i am so cooked

[@sobiaajmal593]

Can we say M or mol/litre is same as mol/dm3

[@dontmindme4466]

lmao this is kinda late but yea its teh same. mol*dm^-3 is also the same

[@venuss.7218]

confusing sig fig... the questions asked for 2 sf but the answers are in 3 sf.

[@cliffordcadiz2553]

why in number 1? he times it by 1000, in number 2 he don't?

[@zaryaomer2739]

clifford cadiz in he divided it by 1000 to convert ml to litters in both

[@manavclips]

the goat

[@anaseshmela8512]

Tomorrow is my midterm exam.

[@abdetaedea]

QUESTION #3???

[@pastrameany]

i LOVE you

[@ikramessaessa1797]

Why is there no Arabic translation in this video?

[@mathquizlet3177]

I bought the merch lmao

[@yatendrasinghapkaapna9787]

Very true

[@aishu71]

God bless

[@bankoleolamide140]

♥️

[@insert_apathetic]

AP chem sucks and I regret everything

[@kyledimpleaguila4422]

Can someone help me to this problem? How many moles of oxygen can be obtained by the decomposition of 7.5mol of reactant in the 2H2O2 --> 2H2O + O2

[@bones3642]

Use mol ration on the oxygen so basically 7.5 x 1 mol O2 / 2 mol H2O2 = mol oxygen

[@jennyritz4611]

Ok, would people please stop teaching students to use M1V1=M2V2 for everything? Doing a separate mole ratio step works every time, and most of the time students won't remember to incorporate molar ratios into the ***DILUTION*** equation. It's for dilutions only, and after 9 years of seeing the same mistakes, I wish it would stop being perpetuated, especially by popular KZbin tutorials.

[@isaiahgauthier2176]

Your anger must stem from being one of the bad teachers students on these tutorials complain about.

[@squidking2679]

i love you

[@beatriz2335]

Why do you do it that long way why can't you just plug in numbers in the equation

[@saul3965]

Beatriz M1V1=M2V2? (First one)

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I wanna ✨pass away✨ don’t go to college people

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odio quimica

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