Heat Capacity, Specific Heat, and Calorimetry

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Professor Dave Explains

Professor Dave Explains

8 жыл бұрын

We can use coffee cups to do simple experiments to figure out how quickly different materials heat up and cool down. It's called calorimetry. Take a look!
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Пікірлер: 488
@abdullahb2068
@abdullahb2068 5 жыл бұрын
you are amazing what the teacher do in 50 min you did it in 5 min
@JihadAlAnsari
@JihadAlAnsari 5 жыл бұрын
I always wondered why it would take them 30 minutes to explain a concept which can be done in 2 minutes.
@pepitobenegas
@pepitobenegas 4 жыл бұрын
@@JihadAlAnsari because then they wouldn't have jobs lol
@adamigbaria5881
@adamigbaria5881 3 жыл бұрын
اا والله ^_*
@vasanthisuperkaruna3407
@vasanthisuperkaruna3407 3 жыл бұрын
indeed
@willbgm5x5
@willbgm5x5 2 жыл бұрын
@@JihadAlAnsari because they are teaching 20+ people who learn in different ways, they also need to go over multiple topics at a time. Imagine you have a 2 minute class and don’t pay attention for one minute (zone out) you’re done for!
@marufhasan1684
@marufhasan1684 3 жыл бұрын
"He knows lot about science stuffs, Professor David explains! Turuttu ! "
@fishplayztoh
@fishplayztoh 3 жыл бұрын
Lol
@DvolWOLF
@DvolWOLF 2 жыл бұрын
It's dave*
@luistomaslloyd5463
@luistomaslloyd5463 2 жыл бұрын
@@DvolWOLF no it's chemistry Jesus
@1alex92
@1alex92 2 жыл бұрын
I love that too lol I'm always singing along 😂
@ACTHEGOAT
@ACTHEGOAT Жыл бұрын
How tf does that sound like "turuttu" to you ?
@charlesyuan
@charlesyuan Жыл бұрын
It's my 2nd semester of first-year university chemistry... and of course, Professor Dave saves me once again.
@yunyung
@yunyung Жыл бұрын
Same here and agreed 🥹
@AbdelRadhwan
@AbdelRadhwan Жыл бұрын
@@yunyung lmao same as well
@riruruuu
@riruruuu 9 ай бұрын
Then why am I doing this in 10th grade. Not fair
@riruruuu
@riruruuu 9 ай бұрын
Then why am I doing this in 10th grade. Not fair
@keviisam5200
@keviisam5200 6 ай бұрын
@@riruruuu bcaz what that person is doing is a intro chem course, they refresh the basics first then dive into the harder stuff as they progress
@gabriels2395
@gabriels2395 6 жыл бұрын
At the beginning, it thought I would be really difficult, but you explained it well! I see that you omitted the cancelation of the negative signs of the metal q and the metal Delta temperature, that confused me at first but made me think a little harder (which was good!). Thank you again!
@KFUURE
@KFUURE 3 жыл бұрын
Hello guys, just to help you guys out the equations is missing negative in the calculation. To end up with the Ans: 2.19 J/g °C i thought i would simplify for those that may need it. Don't forget the metal is losing energy and the water or liquid is gaining energy 'joules' So :- Qmetal/metal DT " -850J /(4.82) (-80.5°C) = 2.190665189. COOL WELL EXPLAINED VIDEO THOUGH. hope this helped.
@thestrange6
@thestrange6 4 жыл бұрын
hello sir ! my self rishabh , i am from india. today fortunately i came to your channel. your style of teaching is fantastic it attracts me a lot . thanks for free education. you are making a great effort to make this world Literate wish you all the best. you cover the topics very earlier and effectivily it is very benificial for all
@BabitaKumari-vv4vo
@BabitaKumari-vv4vo 2 жыл бұрын
Same bro
@ethanp4050
@ethanp4050 7 жыл бұрын
I didn't do the comprehension I was to busy jamming to the sick beats
@ProfessorDaveExplains
@ProfessorDaveExplains 7 жыл бұрын
check out the song at the end of any clip in my organic chemistry practice problems series. that's the dopest beat of them all.
@ethanp4050
@ethanp4050 7 жыл бұрын
Wow you're right I'm adding it to my playlist rn ✌🏾
@EbonyPope
@EbonyPope Ай бұрын
@@ProfessorDaveExplains Why are you using Celsius and not Kelvin? The equations I saw multply by Kelvin not Celsius. Won't you get a wrong result this way? Please help.
@alexandergeorgebradley8707
@alexandergeorgebradley8707 5 жыл бұрын
Thanks Professor Dave for doing something in four minuets my professor couldn't do in forty minuets. Explain the material.
@morganburke2286
@morganburke2286 6 жыл бұрын
This really helped my understanding of this topic thank you!
@OddFoxxeP
@OddFoxxeP 4 жыл бұрын
I know this video was a while ago but if you ever do remakes, putting everything in standard units would be awesome so it's consistent with college courses. Like kg, K, and all that. The visuals you put in are so helpful, thanks! ;]
@mahigupta8505
@mahigupta8505 2 жыл бұрын
so u are a studend of thermodynamics?
@EbonyPope
@EbonyPope Ай бұрын
Why is he using Celsius and not Kelvin? The equations I saw multply by Kelvin not Celsius. Won't you get a wrong result this way? Please help.
@kevinkennedy1667
@kevinkennedy1667 7 жыл бұрын
Awesome video hit the nail right on the head
@angeliemaebonaobra4448
@angeliemaebonaobra4448 6 жыл бұрын
Thank you Professor Dave!!!!!
@witty_me
@witty_me 6 жыл бұрын
Dave, you are really good.Thank you very much.
@Jamieeee-ht7qk
@Jamieeee-ht7qk 5 жыл бұрын
How do I always get suggestions on what I'm currently learning in class!? 😮 Professor Dave is psychic!
@anubhavyadav4113
@anubhavyadav4113 3 жыл бұрын
The best part is your video is concise and useful . thanks
@abeladugna1897
@abeladugna1897 3 жыл бұрын
I love this man! Thank you so much, your amazing! ❤️
@MasAgungLaksana
@MasAgungLaksana 5 жыл бұрын
It was a couple years I haven't learn about different of heat capacity or specific heat. Thanks for explaining us.
@oliviaadel594
@oliviaadel594 6 жыл бұрын
You are very fantastic prof. Thank you for making this channel 😊😊👍👍👍
@comchemistry9381
@comchemistry9381 2 жыл бұрын
I would much prefer you use the equality of heat lost = heat gained. q(water) = -q(metal) Thus you can be consistent in the determination of delta T as final T - initial T. Your video is really nice for an introduction to the concept of calorimetry but may be confusing when instructors discuss exothermic changes which are given a negative q or delta H.
@kameiku
@kameiku 2 жыл бұрын
This dude is so amazing even the teacher all over the philippines LINKED his vids for me and my class mates to whatch
@alexiskironde7413
@alexiskironde7413 4 жыл бұрын
Thankyou for the video on Heat Capacity, Specific Heat, and Calorimetry.-Alexis Kironde.
@pmmeyourdadjokes9811
@pmmeyourdadjokes9811 3 жыл бұрын
Such a wholesome comment written like an email
@makllxbjsnjwlr
@makllxbjsnjwlr Ай бұрын
This is KZbin you didint have to be that formal take a chill pill😂
@aya5468
@aya5468 2 жыл бұрын
Wow, I needed that visualization. 👀👌 This is good stuff.
@daflemubarik5000
@daflemubarik5000 7 жыл бұрын
thank u very much really its clear more about calorimeter
@ruivivarjohncarls.149
@ruivivarjohncarls.149 3 жыл бұрын
Liked and subscribed. Thank you professor Dave, this is dope
@venkateshwarraovenkateshwa8837
@venkateshwarraovenkateshwa8837 7 жыл бұрын
very nice explained sir
@shlokmorbale7792
@shlokmorbale7792 2 жыл бұрын
thank you professor Dave, for eplaining me calorimetry in simple words.
@xoDosu
@xoDosu 4 жыл бұрын
I love your content so much but bro you your intro is the funniest thing ever it really made my day
@Catnipis
@Catnipis Жыл бұрын
Amei a explicação ❤🎉 muito obrigada! O Brasil te assiste!!
@thatboi7492
@thatboi7492 4 жыл бұрын
Great videos! Keep it up!
@sledfitness
@sledfitness 2 ай бұрын
Very insightful helped me to understand that coffee cup experiment
@ComandaKronikk
@ComandaKronikk 6 жыл бұрын
I love you Professor Dave
@ahnafajmain4366
@ahnafajmain4366 3 жыл бұрын
lovee the introoo i already start singing it when i click on ur video thank you brother, u help alot of fellow studs by ur lecs GOD BLESS YOU!!
@buildingfilming
@buildingfilming Жыл бұрын
Awesome comprehension question!
@randomguy36j98
@randomguy36j98 3 жыл бұрын
i have long graduated and sometimes this very simple thing is not remembered (we cant remember everything right), so this video is an excellent video for a short revision.
@chahatdhanda8094
@chahatdhanda8094 6 жыл бұрын
Nice lecture
@pranavsrinath5076
@pranavsrinath5076 7 жыл бұрын
sir, will you define heat capacity with some other lab activities??
@biraodra8869
@biraodra8869 6 жыл бұрын
That's great explanation
@user-jn7uh4ej7u
@user-jn7uh4ej7u 6 ай бұрын
very great video! prof dave
@mauwww_
@mauwww_ 2 жыл бұрын
THANK YOU !
@ryzajanebaluyot4631
@ryzajanebaluyot4631 8 ай бұрын
THANK YOU FOR THIS!!!
@lazr9227
@lazr9227 3 ай бұрын
thank you so much jesus i have a test tomorrow and you came in clutch ❤❤❤❤❤❤❤❤
@Rudra-mm1qf
@Rudra-mm1qf 3 жыл бұрын
lovely explaination
@arnan.k4297
@arnan.k4297 6 жыл бұрын
Your videos r very useful but can u plz talk about thermal decompostion
@warlock2158
@warlock2158 3 жыл бұрын
Thanks Dave.
@blanket6863
@blanket6863 6 жыл бұрын
thank u so much omg
@damongeo840
@damongeo840 3 жыл бұрын
Τhank you very much for sharing! I am watching you lectures to revise material which is needed in order to earn my master's degree. The only thing that I would like to say is that since the volume of the water has two significant figures, the end result should have two significant figures too [2.2 J/(gr*°C)] (3:38). Apropos, I couldn't find a metal that has this specific heat; could you reveal it to me?
@curioscopy2633
@curioscopy2633 6 жыл бұрын
Bless this video
@mattpachec0
@mattpachec0 5 жыл бұрын
Thank you so much !!
@noelyperez2582
@noelyperez2582 4 жыл бұрын
My native language is Spanish but I study in Brazil so all my classes are in Portuguese and the only way that I found to understand this topic was theses videos in English hhahahahah, I love your videos
@pedrocarlosdeoliveiradossa5657
@pedrocarlosdeoliveiradossa5657 3 жыл бұрын
Really? kkkkkkk I'm from Brazil
@amiralclaude3376
@amiralclaude3376 6 жыл бұрын
Very intelligently explains. Prof Dave is the best
@bhartkumarlohana5707
@bhartkumarlohana5707 6 жыл бұрын
Nice lecture sir
@Naveen_Anan
@Naveen_Anan 3 жыл бұрын
Superb bro!!
@jiyagayathri8148
@jiyagayathri8148 3 жыл бұрын
I will do anything to make u my physics teacher....Thanks for these amazing videos !!!!!!! 🤩
@prashant4123
@prashant4123 2 жыл бұрын
He looks like Ranveer Kapoor
@arnoldthegreat4138
@arnoldthegreat4138 8 жыл бұрын
thamks
@tinkertaylorm0624
@tinkertaylorm0624 6 жыл бұрын
Thanks!!
@jasminaktertonni6691
@jasminaktertonni6691 3 жыл бұрын
I am from Bangladesh. Really your lecture help me.
@Hiba-gd8rz
@Hiba-gd8rz Жыл бұрын
That last q helped me understand that I understood. Tnku
@mohammadanwarzahoor1286
@mohammadanwarzahoor1286 5 жыл бұрын
Thank you sir
@Cyberbully008
@Cyberbully008 10 сағат бұрын
to think this the same dude who be cussin out flat earthers i love this guy frl
@tiyababy5207
@tiyababy5207 2 жыл бұрын
Thank you bro 🙏
@zeimarodriguez7400
@zeimarodriguez7400 7 жыл бұрын
Omg. Thank you! Im a chemistry major but this type of problem was so confusing to me. Thanks!
@otakukid154
@otakukid154 4 жыл бұрын
Zeima Rodriguez bruh i’m in 6th grade tryna figure this out😭
@ronaldkoim1461
@ronaldkoim1461 15 күн бұрын
The best explainer❤
@angeloamam3039
@angeloamam3039 3 жыл бұрын
Helps alot
@LinhNguyen-ds6vt
@LinhNguyen-ds6vt 5 жыл бұрын
Thank you
@asmaas4427
@asmaas4427 5 жыл бұрын
Hi Professor Dave THANK YOU! Your videos are very helpful with my SAT Chemistry prep. I have a question tho, how do you get delta T for the second equation of the metal?
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
the initial temperature of the metal is 115 so you have to use that!
@puneetpalsingh4383
@puneetpalsingh4383 4 жыл бұрын
@@ProfessorDaveExplains sir why we are taking the subtraction whether both are differently placed?
@bubblee1445
@bubblee1445 Жыл бұрын
Hi@@ProfessorDaveExplains, I also have a question. Why are we subtracting from the initial temp for the delta T (change in temp) and not from the final temp (i.e. 34.5 C - 115 C)?
@asociatiaademed7417
@asociatiaademed7417 Жыл бұрын
For practical reasons, the change in water temperature is to be recorded in time. When the graphic peaks, that is the temperature change for the given equations. That is because the calorimeter change heat with the environment as well. Your thoughts?
@taimgamer9648
@taimgamer9648 4 ай бұрын
What is the initial value of metal temperature?
@shafianizan6808
@shafianizan6808 6 жыл бұрын
Hello prof. , im confused by the concept of this question which is contrast to my understanding, the solution explains that the q of the diamond is equal to the "-" q of the water (q[diamond]= - q[water]. Why did the water absorbed heat and has a negative value? 5. As a purity check for industrial diamonds, a 10.25-carat diamond (1 carat = 0.2000 g) is heated to 74.21 oC and immersed in 26.05 g of water in a calorimeter. The initial temperature of the water is 27.20 oC. If the specific heat of diamond is 0.519 J/g oC, what is the final temperature of the water?
@nhynearanilla7601
@nhynearanilla7601 6 жыл бұрын
Hello sir.. thanks for this video. Just wanna ask how to measure sp of soluble solids like sugar? pls reply thanks
@Seif97ify
@Seif97ify 4 жыл бұрын
What's the difference between ''heat transfer'' and ''change in temperature''?
@mcvihemba
@mcvihemba 15 күн бұрын
At a village a mother heats 4 liters of water with a paraffin stove from a temperature of 18 °C. She later noticed that 20 g of the paraffin was used up. Calculate the final temperature of the water if the heat value of paraffin is 31 MJ/kg and the specific heat capacity of water is 4187 J/kg. °C.
@suharat4270
@suharat4270 7 жыл бұрын
vry usefull..gd way of teachnggggg
@jasminecoca1170
@jasminecoca1170 6 ай бұрын
Thanks that helped alot But did you assume that the metal started up at 25.5°C when the question doesn't mention it. I thought that when the starting temperature isn't mentioned we just take the standard which is 25. So my answer was slightly different, s≈1.958J/g°C
@analaurajimenezmorales6595
@analaurajimenezmorales6595 5 жыл бұрын
I have my examen in 1 hour and I so nervious, thanks for help me
@amitnayak5869
@amitnayak5869 5 жыл бұрын
Sir, how specific heat different from conductivity or with other mode of heat transfer....
@Adarsh_Negi
@Adarsh_Negi 3 жыл бұрын
Specific heat is not a means of heat transfer , it is the characteristic property of every substance and is different for all.
@loyan.k
@loyan.k 7 ай бұрын
I have another question is Does material has high heat capacity means to faster speed in change of temperature , in the condition of provide same heat to different material?
@sarafarid3025
@sarafarid3025 3 жыл бұрын
I am from Egypt , Really Thnx 💙
@JacobNignandorMobe
@JacobNignandorMobe 2 ай бұрын
Please prof, I have a question on the enthalpy as, If the elementary step A to B has a reaction enthalpy of XKJ and the activation energy of the reverse step B to A is YKJ, then the activation energy of the process A to B would be what?
@ruxiversi
@ruxiversi 4 жыл бұрын
In the problem 4.82g of an unknown metal is heated to 115.0c and then placed in 35L of water at 28.7c,which then heats uptp 34.5c.What is the specific heat of the metal? For the waterq=(4.186 j/g) (35g)(5.8c) how or where did you get the 5.8cand for the Metal 850j =s(4.82g)(80.5c) S=2.19 j/g cwhere or how to get 80.5c as these temperatures are not mentioned in the question and also when i multiply the specific heat and the temperature i dont get 2.19 j/g ci get 4.82*80.5=388.01 Please explain at your earliest convenience as iam in a dark dark place
@thedangerousjitu694
@thedangerousjitu694 5 жыл бұрын
Hi, umm.. I had a question about the metal and water example... When you were calculating the specific heat of the metal, why did you choose the ΔT to be the difference of temperature between the temperature of the boiling water and temperature of the water on coffee cup?
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
So the metal starts out in the boiling water, and it ends up in the cup at equilibrium, so those are the two temperatures for the metal!
@johnfei434
@johnfei434 5 жыл бұрын
These videos are very helpful. But just one suggestion, put them into an organized playlist of some sort so that people don't have to go around and search for the next topic
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
buddy all of my tutorials are immaculately organized into playlists! did you even think to check before commenting?
@joshrosal5573
@joshrosal5573 5 жыл бұрын
Thank you My physics teacher is ass You made my day
@user-mn8re8jp7v
@user-mn8re8jp7v 4 ай бұрын
More examples, please!
@oviyanaresh5775
@oviyanaresh5775 7 жыл бұрын
thank you sir.l was not able to understand the concept clearly when l was taught at school.this video helped me tremendously....😂😂😂😂😁📣
@aliyajamal3757
@aliyajamal3757 6 жыл бұрын
Thanks
@RebaoneKomane-xt7ep
@RebaoneKomane-xt7ep 3 ай бұрын
Thank u sir
@user-hv6ef9ie1g
@user-hv6ef9ie1g 7 ай бұрын
2:31 Is the specificheat before or after the water absorbs the heat from the rock?
@bhavishyasharma7834
@bhavishyasharma7834 2 жыл бұрын
3:45 why was the difference in water temperature not subtracted from the temperature of the metal, and why the total temperature was subtracted from the temperature of metal?
@laurend1307
@laurend1307 Жыл бұрын
Why is 66.5 degrees not a negative change in temperature at 3:05? The temperature of the metal decreases to reach the final temperature, right?
@thorfin_dis
@thorfin_dis 7 жыл бұрын
Sir i now know a lot from your teaching .can you the difference between melting point and boiling point
@ProfessorDaveExplains
@ProfessorDaveExplains 6 жыл бұрын
One marks the transition from solid to liquid, the other from liquid to gas.
@bhaveshbisht9763
@bhaveshbisht9763 7 жыл бұрын
Thanks .. Prof. DAVE
@d1s0r13nt3d
@d1s0r13nt3d 6 жыл бұрын
Bhavesh Bisht he is yesus l
@divinephanes
@divinephanes 3 жыл бұрын
I'm confused, how did you calculate the specific heat of an object?
@ayinguimel3570
@ayinguimel3570 3 жыл бұрын
Me too 😢😢😢
@juliadurbeck1597
@juliadurbeck1597 6 жыл бұрын
For the comprehension question: In the question itself, you said that the unknown metal was placed in 35mL of water. However, when solving for the water, you wrote 35g. Was that a mistake or was it intentional?
@ProfessorDaveExplains
@ProfessorDaveExplains 6 жыл бұрын
water is 1.0 g/mL!
@SuperKingedwin
@SuperKingedwin 5 жыл бұрын
I LIKE IT
@AhmedMAdly
@AhmedMAdly 4 жыл бұрын
hey professor dave, thanks a lot for the explanation but I have a question though in the example how could the initial temperature of the metal be 100c and the water is 25c but the final temperature for both of them is 33.8c shouldn't it be at 62.5c so both of them can be at thermal equilibrium? are these just arbitrary numbers for the example or am I missing something??
@ProfessorDaveExplains
@ProfessorDaveExplains 4 жыл бұрын
the hot metal starts at the hot temperature, and it is placed into room temperature water. then the system equilibrates at an intermediate temperature, but these objects have totally different specific heats, the metal cools at a different rate than water heats, so the final temperature is not just the average of the temperatures, you have to do the math
@AhmedMAdly
@AhmedMAdly 4 жыл бұрын
oh I didn't know that my teacher just taught it to me like that in prep school or something :"" I appreciate the very quick response too! thanks a lot
@idealthinker101
@idealthinker101 5 жыл бұрын
Professor, I really didn't understand that from where did we get the value (80.5°C) in the comprehension ??? Someone please help me...🙏🏻
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
it's just the change in temperature!
@kevinakussah4736
@kevinakussah4736 4 жыл бұрын
But how did you work that out
@Ma-bx8bz
@Ma-bx8bz 4 жыл бұрын
@@kevinakussah4736 final temperature minus initial temperature
@matrixate
@matrixate 5 жыл бұрын
Specific Heat of Water is 4.186 J/gC for the comprehension part.
@gmed26
@gmed26 5 жыл бұрын
TheChosenOne thanks. i was going crazy as i was using 1 cal/g C and getting the wrong answer hahah
@keylal3339
@keylal3339 3 жыл бұрын
how does he get 4.186?
@dre7teen530
@dre7teen530 3 жыл бұрын
@@keylal3339 exactly i want to know as well
@syzy1442
@syzy1442 4 жыл бұрын
shouldn't be the q in computing for the specific heat capacity of metal be negative? Heat was released by the metal isn't it?
@sureshchowadry1768
@sureshchowadry1768 7 жыл бұрын
Sir specific heat capacity can we called as specific heat or both differ??
@ProfessorDaveExplains
@ProfessorDaveExplains 7 жыл бұрын
nope they are different! heat capacity applies to a whole object, specific heat applies to one gram of a particular material.
@dennisc5607
@dennisc5607 6 жыл бұрын
But specific Heat is the same thing as specific heat capacity because all your adding is a capacity to the name.
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
@@dennisc5607 ah i see, yes those are the same.
@dennisc5607
@dennisc5607 5 жыл бұрын
Professor Dave Explains 👍
@aristondaganioiii2670
@aristondaganioiii2670 Жыл бұрын
where did he get the 9.25g and 66.2 C in his computation for specific heat of metal?
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