Molarity Practice Problems
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- Опубліковано 7 лют 2025
- This chemistry video tutorial explains how to solve common molarity problems. It discusses how to calculate the concentration of a solution given the mass in grams, given moles and volume in Liters, given grams and mL of solution, and how to find the molarity given the density and volume of the solution. This video contains plenty of examples and practice problems.
Stoichiometry - Free Formula Sheet:
bit.ly/3Z7uMw8
Chemistry Chapter 4 - Video Lessons:
www.video-tuto...
Chemistry 1 Final Exam Review:
• General Chemistry 1 Re...
_____________________________
Stoichiometry Practice Test:
• How To Solve Stoichiom...
Solute, Solvent, & Solution:
• Solute, Solvent, & Sol...
Strong & Weak Electrolytes:
• Identifying Strong Ele...
Molarity Practice Problems:
• Molarity Practice Prob...
Ion Concentration In Solutions:
• Ion Concentration in S...
Dilution Problems:
• Dilution Problems, Che...
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Types of Chemical Reactions:
• Types of Chemical Reac...
Solubility Rules:
• Solubility Rules
Predicting The Products of Reactions:
• Predicting The Product...
Activity Series of Metals:
• Activity Series of Met...
Will This Reaction Occur?
• Chemistry - Will The R...
Predicting Products of SR Reactions:
• Predicting Products of...
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Double Replacement Reactions:
• Introduction to Double...
Net Ionic Equations:
• Precipitation Reaction...
Writing Chemical Equations From Words:
• How To Write Chemical ...
Solution Stoichiometry:
• Solution Stoichiometry...
Molarity & Dilution Problems:
• Molarity Dilution Prob...
Acid Base Neutralization Reactions:
• Acid Base Neutralizati...
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Acid Base Titration Problems:
• Acid Base Titration Pr...
Mixture Problems:
• Mixture Problems
Calculating Oxidation Numbers:
• How To Calculate Oxida...
Oxidation and Reduction Reactions:
• Oxidation and Reductio...
Balancing Redox Reactions:
• Half Reaction Method, ...
Ideal Gas Law Problems:
• Ideal Gas Law Practice...
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Final Exams and Video Playlists:
www.video-tuto...
Full-Length Videos and Worksheets:
/ collections
Stoichiometry - Free Formula Sheet: bit.ly/3Z7uMw8
Chemistry Chapter 4 - Video Lessons: www.video-tutor.net/chemical-reactions-and-solution-stoichiometry.html
His back doesn't even hurt from carrying so many students GPAs absolute legend
who else here the night before your chem test
Yeah
defiinitely me.
Yep
I'm here 20 min before an exam
Lol me 😂
Struggling for two weeks with this, you cleared it in 20 minutes, thank you!!!!! Please don’t stop helping students all over the world, the hero we need and don’t deserve !!
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u are literally my teacher for the rest of the quarantine year
Can you please tell me about more UA-cam channel of chemistry
@@thechemicalcircuit try khan academy, professor dave explains
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I am so proud I solved all of the problems here myself! I know it's not that hard to a lot of people, but this is a huge thing for me as I struggle with Chemistry.
taught me more in 20 minutes than my teacher did this entire semester
Jan Wechsler facts
Lol yes
Hhhh
Same dude... Something about youtube becoming a better education platform than actual schools is unsettling though.
Because you weren't paying attention. I literally do this exact same thing in the class and kids bitch and bitch. I say desired on top, cancelled on the bottom. Molarity is mols per liter and you can use it as a conversion factor. I give them mol maps to show them EXACTLY what to do. You don't pay attention.
Your a godsend 🥺I had no idea what my instructor was trying to tell me for 2 weeks and you helped me understand in 20 minutes
You are the reason why my Chem grade is 93%. Thank You!!!!
How’d it go in chem last year
Every talkin about how this saved them in college Chem and I’m over here crying cuz I’m in 9th grade
10th here and struggling for real
Same bro, I'm struggling.
@@adamkarakira6486 lol im in 7th
I feel you, im also taking college chem in 9th grade
Yep, same bro, I'm also in 9th. And, this is actually NOT in our syllabus, but... Meh, sounds fun.
The Organic Chemistry Tutor, you are the best!!! I will not forget you when I graduate in the future! :)
You make chemistry so easy ton understand. your videos are concise yet still cover all the specifics. I thank you with my entire heart, sincerely, a chemistry 110 student =,)
Professor Organic Chemistry Tutor, thank you for a step-by-step analysis of Molarity Practice Problems in AP/General Chemistry. The practice problems are an excellent way to fully learn about molarity problems in Chemistry. This is an error free video/lecture on UA-cam TV with the Organic Chemistry Tutor.
Helpful in this pandemic times where teachers can't conduct their lessons face to face and students tend to self study. I'm learning a lot from this video. Thank's for sharing, helping and teaching.
you are helping me back in high school till now in college, you deserve a lot ❤
I got finals coming up in two days and these videos are great! Thank you 😊
The best Chemistry tutor i have ever met 😊❤
what’s sad is that this is supposed to be the easiest part of my test today 💀
my senior yearbook quote is gonna be "Thanks Organic Chemistry Tutor, you're the only reason I am able to graduate."
Yet again TOCT coming in for the clutch 2 days before the exam! Idk what I would do without you brother.
this video is literally the only reason i passed chem
Thank you so much this video helped so much. Ive been struggling and very confused in hon chem lately.
Thank you! I have an exam tomorrow and doing these problems and then checking with you how you solved it really helped. Keep up the great work.
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Good to see people been doing this for four years😂
Thank you so much. I didn’t even understand this till you taught me. Thanks!!!
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At around the 11:30 mark, why is that we use only use sulfate ions in our final answer and not Aluminum when the question asks for both Aluminum ions and Sulfate ions?
So typing this question helped me realize the answer to my question.
You were giving us an example of how to show our work if we had too.
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TY bro i was stuck in ISS this whole week while we were learning this and missed EVERYTHING thanks for the help
How’d it go two years ago
I like this video because you broke down molarity with beautiful examples
i don't know if you can read this but you have a special place in heaven. guy, you are amazing
Evereytime the answer comes my mind got mind blown, its like a magic to me.. hahaha
2024 and I am writing my final Chemistry test at 8:00 I am trying so hard to get to know this it 00:25 now means i am writing in the next 6hours
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I have a test in 10 minutes,I haven’t payed attention in chem, I hope this video saves me 😭
so so so helpful especially for the MCAT thank you so much!!!
How’d the MCAT go
This is more usefull than my teachers 1 hour lesson
Very nice sir. I am very thankful because of u this concept was clear.
I know this isn't a huge deal but be careful with the placement of the signs for the charges. At 10:56, I was a little confused for a sec!!! Great video!!!
@15:20 cannot we find molarity of the solution and multiply it with the subscript (which is three for chlorine here,) like in the previous question to this we did when the molarity of the salt was given and concentration of ions were asked and we did the calculations the same way.
I get a bit confused by these different steps. Sometimes it says x before something but instead you divide by it. Sometimes there is a divided by but you multiply. Is there any video that explains the process more thoroughly, like explaining why you (as in around 8:50) start with 50 ml / 1 rather than just 50 ml. Many of these little things seem odd to me. It would be great with a video that explains the framework in detail in order to remember it all more easily.
3 days before my test. I got everything else except these molarity and molality formulas.
How did he find/set up the equation at 19:02? knowing could really help me understand
It's dimensional analysis. Basically, grams in the bottom cancel with grams at the top. You could set up the conversion factor in such a way that it gives you the result in the desired units.
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could we have a degree in watching these kinds of videos?
Probably
Good day sir , I hope you are well .For question 5, why did you calculate the mass of NH4CL and not the mass of AlCl3 ?
was here since my AnaChem days, now I'm on our Clinical Chem so here I am, back with this legend (coz I cant remember shit from anachem haha)
Bout to get a 100 on this chem test trust
Bruh why our teachers cant teach like this??
Really good representation, i would just use the formulas instead of this chaotic way
i watch these videos and i understand them but when i see the test my brain does not comprehend the questions and i dont know how to solve them anymore....i h8 my lyf
Yup, same 😭
Mark Wahlberg does the best chem videos
in 4:00 i don't get it, why does the answer is 6M?
Who else here the night before the Chem test
Your teaching is too good thanks for making this video
Gonna rewatch this for sure
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There is slight inaccuracy in problem 2. 50 mL ethanol + 400 mL water is not 450 mL solution. Ethanol has smaller molecules than water so when they are mixed ethanol occupies the space left by water molecules.
Hello! correct me if I'm worng but in No. 1 (c) isn't 700 mg supposed to be converted to grams? I'm sorry, I didn't use the traditional dimensional analysis method but I computed it one-by-one. :((
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lets be honest, its not our teachers, we just dont pay attention
Actually in most cases, it is our teachers. Mine gets so mad when your just ask a damn question.
What about finding the volume of solution? :/
pov: you're here the night before your chem test and you haven't payed any attention
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at 9:30 ... Isn't the answer just 1.9 M? since the measurement with the least significant figures only has 2 sig figs?
how can u just flip a fraction at 20:33? where did that come from!?
Are you supposed to make it neutral charge? Example is sodium and oxygen, sodium is + charge and oxygen is 2-. So shouldn't you multiply sodium by two and use that in the grams to mols conversion?
you are a lifesaver tysm
Than you so much for your help! I really appreciate your videos here.
Are you supposed to round Molarity to the correct sig figs?
Watching this an hour before my final ❤❤❤
Same
thank you so much for the helpful video.
literally such a life saver!!!
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Me who is watching this after the exam: I am 4 parrallel universes ahead of you
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Guess who has an exam 20 mins later
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I have my finals tmrw im scareder
I hope to learn a lot from you thank you
In question 2:
Why didn't you change the 50ml of ethanol to 0.05L to find the mass of ethanol since you changed the 450ml to 0.45L
Who else here is preparing for the exams
Im cooked tomorrow ☠️
Same bro😭
Same ;-; i hate failing chemistry 😭😭
I don't get it 50 ml of ethanol is not equal to 50 g of ethanol?
No, because Ethanol is not 1g/mL, it is 0.79 g/mL, so by multiplying 0.79g/mL by 50 mL you get 39.5g of Ethanol. If Ethanol was 1g/mL you would multiply 1g/mL by 50 mL and you would get 50g, but Ethanol is less than 1g/mL so you would get less than 50g of Ethanol. Hope that helps. Good luck
@@Ghost.Spectrum good stuff
@@Ghost.Spectrum I understand now so to convert ml to g I have to multiply 50ml x density which is 0.789g/cm3 for ethanol and that is about 39.45 g
@@pepitobenegas Yes that is correct
Why did you write the answer of question 1c as a decimal? I had it perfectly fine just the same but without the decimal. Is that a problem ?
Unit. Measure. Broken units. Mole per litre. Unit of molar concentration.
Actually fucking carrying me through chem this year
This practice problem is confusing me and I’m wondering if anyone can help me: when 34.5mL of 1.300M potassium carbonate solution reacts with 15.4mL of 2.900M hydrochloric acid what is the mass of gas that is produced?
Why was the volume in the last question given in ml not L?