Final Exams and Video Playlists: www.video-tutor.net/
@breannepoernbacher75993 жыл бұрын
Imagine enrolling into zoom university for 10k a year and they cannot even properly teach you coffee cup calorimetry :,)
@navidaabdullahi16932 жыл бұрын
im in normal college for 22k a year
@bentack332 жыл бұрын
Here in high school taking AP chem, we do one probably and teachers goes, alright I hope you got it!
@joesmittington12072 жыл бұрын
dude just go to Community college, here in florida panhandle its 3k a year
@noorhanraad27082 жыл бұрын
I am literally watching your videos about 24 hours before my final chemistry exam! Thanks your videos help a lot!
@kwanelemakhobotlela7536 Жыл бұрын
did you pass ?
@toastycrystaleclxpse34234 ай бұрын
@@kwanelemakhobotlela7536 Only three of us passed in the entire class...
@georgesadler78303 ай бұрын
Professor Organic Chemistry Tutor, thank you for a step by step analysis of the classical Coffee Cup Calorimeter Problem in AP/General Chemistry. Although this material is simple to follow and understand from start to finish, solving word problems is problematic in Science and Engineering.
@owenzhang95865 ай бұрын
This guy is single handedly carrying me through high school
@sciencenature7877 жыл бұрын
Your videos help me a lot in my jee preparation in India.Thank you.
@divinephanes3 жыл бұрын
one question, how do you calculate the specific heat capacity of a 1M solution? Is it different than calculating a normal solution?
@jareddemke40314 жыл бұрын
Thanks so much! this was really helpful!
@secondbelarus5 жыл бұрын
Dear O-tutor, here is the catch on 7:15 - why is the mass 250g (only water)? Should have been 265g solution = 15g solute + 250g solvent. It is the united system with the specific heat capacity assumed to be 4.184, and the density 1.00, and its temp rises. Am I right?
@maggiestorti6565 жыл бұрын
this is what i did! because the solution is a mixture of both the CaCl2 and water! My answer was 86.13 kj/mol
@Ceecee3845 жыл бұрын
@@maggiestorti656 So....do we leave out the 15g of solute or include it with mass? I have a final coming up and would like to get this question right.
@maggiestorti6565 жыл бұрын
C With2Es I’m pretty sure we add it to the 250g!
@secondbelarus4 жыл бұрын
@@nazuzun5803 OK.
@markwang74802 жыл бұрын
i dont think so because that equation is only for Qh2o, which means to use the mass of h2o by itself
@gabrielwilson64844 жыл бұрын
NES chemistry tests have you add in the 15g of CaCl2 to the q of the rxn in order to get these problems right. Are there 2 ways of doing these problems?...
@norhayatimi3 жыл бұрын
Some of the solution for coffee cup calorimeter, they sum up the mass of water and the reactant. It is true or wrong?
@greatsis54533 жыл бұрын
You explain is fabulous thank you so much
@DivineSeaDragon4 жыл бұрын
Bless your soul friend
@shellychrisman19016 жыл бұрын
At 5:08, why is q Rxn = -q H2O? I thought if the temp. of the solution went up, then H2O was absorbing heat, and was therefore (+)? Calorimetry problems severely confuse me for some reason, but your videos have been very helpful so far. Just want to make sure I'm understanding this correctly. Thank you!!!
@shellychrisman19016 жыл бұрын
is that just a general formula showing that there must be a negative sign in order for them to be equal?
@Pal0maSama6 жыл бұрын
Yes, there must be a negative sign to make them equal. You can put the negative sign on either side of the equation.
@KomicWorld4 жыл бұрын
From the system’s perspective, the CaCl2 is losing heat, so (-), while the water is gaining heat, so (+). It gets very confusing because you have to grapple with the system’s perspective and the surrounding’s perspective. Hope that helps
@guts2662 Жыл бұрын
@@Pal0maSama so qrxn is for the compound only?
@fibonacci3138 Жыл бұрын
OML, this is amazing, thank you so so so so so ossoosososoos much!
@alexandervarady53264 ай бұрын
why some times the mass needs to be added with the substance and other times we just use water mass?
@costcoman4085 ай бұрын
why is qh2o negative? the qrxn is losing heat so shouldn't it be negative and qh2o positive? or does it not matter.
@sadprincess44357 ай бұрын
One thing I don't get is that are q solution and q reaction the same? Or q solution and q calorimeter are the same
@leeday58302 жыл бұрын
in the equation q= mcT ,for m, do we use only the mass of water or the total mass?
@bcefghijklm2 жыл бұрын
i think it should be the total mass so m= mass of H2O + mass of substance
@noblevenom28587 ай бұрын
yea he did that wrong. it is supposed to be the total mass, not just the mass of the water
@m_nandha_krishnan63433 жыл бұрын
It is answer for change in internal energy not enthalpy ..
@ChizzyBeeClassic5 жыл бұрын
Well explained. Thank you
@KZ-sq3ou Жыл бұрын
What if we have multiple reagents with a limiting reagent
@joshiifruit5554 Жыл бұрын
thank you.
@brianreyes58313 жыл бұрын
Is there a derivation for q = mC(delta T)
@banzilwillienwyethi.2703 жыл бұрын
if the mass of the water is not given, how can i determine it?
@banzilwillienwyethi.2703 жыл бұрын
@Jennifer Brown anything about the water is not given, but dont worry i already know it
@squanchmastersquanch43766 жыл бұрын
Bruhhhh. U shouldve gave the density in the first place. Over all it was a good video.
@alexreynoso50144 жыл бұрын
agree. Makes it so you have to be walked through the question. Not allowing you to get a change to do it first on your own.
@btcmoon60584 жыл бұрын
you are a god
@swe6795 жыл бұрын
So are these coffee cup calorimeter problems always going to - ( exothermic )? since the formula has a - on one side
@Max-jm6md4 жыл бұрын
Some solids will result in exothermic reactions, and some in endothermic (such as NaCl). Exothermic reactions result in -ΔH since the reaction is giving off heat, therefore losing that energy.
@beetlejuice47074 жыл бұрын
@@Max-jm6md so endothermic reactions will give positive answers?
@hannahmacintosh11234 жыл бұрын
Does he have any videos on calorimeter constant
@keremtaflanoglu9 ай бұрын
idk
@whyhatholman37834 жыл бұрын
The video was very helpful but there where no sigfigs.
@colanseivanp.31572 жыл бұрын
How do you get a 4.184??
@Magnetshroom Жыл бұрын
It is the specific heat of Water H2O.
@AlecIula2 ай бұрын
surroundins
@aaronalvarez3759 Жыл бұрын
4:10
@jenoh28042 ай бұрын
i love you
@NoorNoor-pf5id2 жыл бұрын
It took u 10 mins to do this and my professor gives us 10 questions in 30 mins ☹️☹️
@Violetvixen7894 жыл бұрын
why dont you ever sigfig?
@ryanperez81792 жыл бұрын
Come unto me, all ye that labour and are heavy laden, and I will give you rest. Matthew 11:28 KJV Jesus lives Jesus Christ is Lord For all have sinned, and come short of the glory of God; Romans 3:23 KJV Jesus loves you repent You're a sinner in need of a Savior That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. Romans 10:9-10 KJV
@medicalquizbank13 жыл бұрын
Drop Your cashapp bro!!!!
@justinquilnet40874 жыл бұрын
how did you know C was = 4.184
@orehit39804 жыл бұрын
Justin Quilnet thats the specific heat of water for me i got it from my textbook but you can also just google it
@VinylUnboxings4 жыл бұрын
It will be provided on quizzes typically, unless your teacher told you to memorize some specific ones.
@databomb4043 жыл бұрын
@@orehit3980 can you send me your textbook on conquerjee101@gmail.com thank u