Guys, at 0:30 I say "moles solute per liter of solvent", but it's per liter of solution! What a dumb mistake on my part, but it's an important definition to get right so please take note.
@parulaggarwal94055 жыл бұрын
It's ok😄
@caribaez57115 жыл бұрын
Thank you for letting us know.
@calebkaufman78524 жыл бұрын
PROFESOR DAVE GROHL
@Hockeyjody4 жыл бұрын
you also need to better explain how you got .5 as your asnwer from (1.0M)(1.0L)= M2(2.0)
@filosofo-sz5ks4 жыл бұрын
@@Hockeyjody I'm a bit late, but it's supposed to be an equation from the algebra class.
@80milekyle706 жыл бұрын
I love the quiz music. They should play that during finals
@BRuvSt0AsT3 ай бұрын
yes
@louisclexvi72007 жыл бұрын
you just helped me pass my exam basically. you magnificent man.
@paigejohnson92013 жыл бұрын
Thank you for making this so concise, while also making it clear! Helped me a lot with my classwork. :)
@kyokokirigiri1004 жыл бұрын
I try to be serious and focus but the face at 0:08 fucking kills me lmfao
@IvoryOut10 ай бұрын
Short, to the point, incredible explanation. THANK YOU!
@AbdullahRizwan-qo1xv10 ай бұрын
The most underrated teacher ever
@Zak-qp5ln3 жыл бұрын
thank you professor dave 👑👑
@samsonkatende26967 жыл бұрын
you have helped me big time ..i appreciate
@lilnugget22803 жыл бұрын
thank you professor dave👑
@Zak-qp5ln3 жыл бұрын
thank you professor dave 👑👑
@tempestlll96383 жыл бұрын
thank you Professor Dave👑
@hadiharhous42873 жыл бұрын
Thankyou professor Dave
@tempestlll96383 жыл бұрын
thank you profesor Dave 👑
@MrCsScience7 жыл бұрын
Molarity = moles of solute per liter SOLUTION, not solvent. I like your videos and the way you explain, but can't use it w/my students as they'll be confused :(
@ProfessorDaveExplains7 жыл бұрын
there's an annotation in place that makes the correction
@bringbackmemesineurope15763 жыл бұрын
what calculations did u have to do to get 0.600L of water? great video btw
@alihave12 жыл бұрын
your channel gonna be the best😍❤️
@phenomenalphysics35484 жыл бұрын
1:21 does that mean that even after adding more solvent volume of solute remains constant?
@gabriels23954 жыл бұрын
I would say YES. Because the volume of solute only increases by adding more solute. Now it is the CONCENTRATION of that solute the one that changes if the volume of solvent is altered. This because the concentration is a "ratio" between the solute AND the solvent.
@phenomenalphysics35484 жыл бұрын
@@gabriels2395 thank you
@etewis872 жыл бұрын
Holy hell I couldn't remember this simple equation for the life of me trying to figure out a concentration problem. Clutch. Thank you!
@yashcaroicar45428 жыл бұрын
cool video...super helpful .... what animation software do you use?
@ProfessorDaveExplains8 жыл бұрын
adobe after effects!
@muhammad9228 жыл бұрын
Thanks prof. Great
@Malikin2 жыл бұрын
I got the answers right. Thanks professor
@1NikkiPink16 жыл бұрын
First of all, thanks for the great videos. I just have a quick question. Are you supposed to add the mass of the solute to the solvent to get the total mass of the solution? I don't know this for certain, and want to make sure I am doing the right calculations. Thanks in advance. *Edit* Mean't volume, not mass.
@ProfessorDaveExplains6 жыл бұрын
well here mass doesn't come into play, as molarity is moles solute per liter solution. but there could be other applications where mass is relevant.
@1NikkiPink16 жыл бұрын
So the volume of the solution is the same with or without the solute inside? That's what I meant.
@1NikkiPink16 жыл бұрын
I confused mass and volume. Sorry.
@ProfessorDaveExplains6 жыл бұрын
oh, yes! i know it seems weird but solute will fit into the spots between the solvent particles and won't impact the overall volume, so if adding a solid solute, we don't have to factor that into the total volume. of course if combining liquids, we do add the volumes.
@1NikkiPink16 жыл бұрын
Excellent! Thank you so much again!
@ryanwilson86773 жыл бұрын
You go Dave!
@user-ry5om3wn5c8 ай бұрын
Prof Dave you are wrong it is per liter of the solution and not per liter of the solvent in case of molarity
@ryanwilson86773 жыл бұрын
Love the Elevator music
@tb27485 жыл бұрын
Can someone explain the intuition behind why dilution can be represented with the M1*V1 = M2*V2 equation? I don't want to just blindly use the formula - would like to know why it works. Is there a way to do these dilution problems with dimensional analysis?
@ProfessorDaveExplains5 жыл бұрын
well concentration and volume are inversely proportional, if you double the volume of solvent, the concentration will necessarily be cut in half
@tb27485 жыл бұрын
@@ProfessorDaveExplains Super fast reply, thanks!
@adrianbernardaguirre10503 жыл бұрын
Hi just gonna ask if you are converting mL to Liters you should divide it by 1000 right? should it be 0.2L or 0.200L? the answer will be different but only in decimal places.
@ProfessorDaveExplains3 жыл бұрын
yep that's right. number of decimal places will depend on the number of sig figs present.
@zwoomy2769 Жыл бұрын
It is 4am, i got a chemistry quiz this morning, and I'm trying my very best to sort this in my brain 😭
@rassimsimou1594 Жыл бұрын
Good
@hadiharhous42873 жыл бұрын
Thankyou professor dave
@ladyt25885 жыл бұрын
U need to remake the video with that correction or insert the caption in the video. The description notes isn't enough
@ProfessorDaveExplains5 жыл бұрын
Well that sounds lovely, except that it's not possible.
@kripashankarshukla40737 жыл бұрын
Sir you explain very well and reply to all the questions. I asked 3 questions through comment and you replied to all of them after 1 or 2 hours. You are superb
@ProfessorDaveExplains7 жыл бұрын
i do my best! please tell all your friends to subscribe!
@kripashankarshukla40737 жыл бұрын
Yes sir, sure
@sardarsourabhsingh52436 жыл бұрын
Thanx prof. Dave
@EmeraldQueen20611 ай бұрын
Where did the 74.1g come from?
@nadiahulwat.17882 жыл бұрын
What about Precipitate kind of elements, its that count in this term as well? Anyway thank you Prof. Dave💎
@ludwigliu4877 Жыл бұрын
The solubility of calcium hydroxide is really low so I think the question at the end is not feasible at all Professor Dave
@user-py5fj1ce2c7 ай бұрын
limewater?
@BadassVideos2 жыл бұрын
has anyone pointed out that molarity is moles of solute per liter of SOLUTION? just wondering
@alicechalwe22456 жыл бұрын
Thanks..
@aluminiumoxide87503 жыл бұрын
Is proportional dilution same as stock dilution ?
@pietertalens12565 жыл бұрын
Great videos! Just a quick question. For the sample problem, when I calculate the molar mass of Ca(OH)2 I get 92.1 not 74.1. What am I doing wrong? Thanks!
@ProfessorDaveExplains5 жыл бұрын
i'm not sure! it's just Ca + 2O + 2H
@sillverice1212 Жыл бұрын
you can just google the molar mass as well. im not sure what you are doing wrong but The molar mass of calcium hydroxide, Ca(OH)2 , is 74.092 g/mol rounded up to 74.1. You take the molar mass of CA and then oxygen and hydrogen. Since there is a 2 around (OH) you need to double both oxygen and hydrogen so its 40.078+ 16+16 + 1.008 +1.008 totaling around 74.1
@yashodhanbarve3581 Жыл бұрын
thank you chemistry Jesus
@caribaez57115 жыл бұрын
Chemistry looks pretty cool
@trapjawguch32475 жыл бұрын
It’s extremely hard though
@caribaez57115 жыл бұрын
Tråp Jäw Gùłçh it’s not that hard. I actually wish I could take more courses. I am taking dosage calculations for nursing and I am struggling. That class is mostly chemistry and math. I feel I am smart person, but the class is two days a week and the teacher seems she expects us to understand what is going on. In my opinion, she is sort of neglectful when I ask her questions. I feel I need to open up my mind more about chemistry.
@Bookshelf823 Жыл бұрын
I just learned 2 months worth of chemistry in 2 minutes
@nataliecorrea54175 жыл бұрын
A bit confused in re to dilution - how do you get the value of M2?
@ProfessorDaveExplains5 жыл бұрын
it's all just algebra, plug in what you have and solve for what you need
@nataliecorrea54175 жыл бұрын
@@ProfessorDaveExplains woah! lightening response time - thank you so much!
@honeydip10315 жыл бұрын
How did you get 74.1 g? in the comprehension portion of the video?
@ProfessorDaveExplains5 жыл бұрын
molar mass of calcium hydroxide
@ITSLIZZ1113 жыл бұрын
from the periodic table
@ryanwilson86773 жыл бұрын
Ohh and love the hair and beard. Nice job.👍
@hueyguo7318 жыл бұрын
thx!:)
@waqasmaqbool37595 жыл бұрын
Why we call solution in molarity instead of solvent ???? Quick
@ProfessorDaveExplains5 жыл бұрын
What is the question?
@elitehumpty36032 жыл бұрын
solvent is part of the reaction. Molarity is literally the answer it is also called the solution.
@gothicsounds80426 жыл бұрын
I cant under stand  ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄ ̄へ ̄
@trevcymanagementllc15284 ай бұрын
chest hair for the win😂
@tonyzhao4097 жыл бұрын
have someone ever told u u look like Jesus
@ProfessorDaveExplains7 жыл бұрын
many times, my friend.
@tonyzhao4097 жыл бұрын
Professor Dave Explains hahaha and also u didnt teach me shit
@tonyzhao4097 жыл бұрын
Professor Dave Explains jkjk i luv u .
@raffih52366 жыл бұрын
yeah
@ariannakraljic62374 жыл бұрын
I thought he looked like Lord Farquaad
@davidrenteria95852 жыл бұрын
best fkin teacher ever... my respects to you mannn woooow , God bless you!
@JATINMANISHI20072 ай бұрын
Bro looks like AI generated
@anilshewalkar99144 жыл бұрын
The 41 dislikes are of fools
@cristhiangarcia59913 жыл бұрын
love to the chemistry lord Jesus!
@bio366geethasankar77 ай бұрын
🙏🙏🙏
@gregmosier59088 жыл бұрын
Dave, the thumbnail of this one has you with your mouth open :-)