Heat Capacity, Specific Heat, and Calorimetry

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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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Опубликовано:

24 ноя 2015

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Комментарии : 493

@marufhasan1684 3 года назад

"He knows lot about science stuffs, Professor David explains! Turuttu ! "

@fishplayztoh 3 года назад

Lol

@DvolWOLF 2 года назад

It's dave*

@luistomaslloyd5463 2 года назад

@@DvolWOLF no it's chemistry Jesus

@1alex92 2 года назад

I love that too lol I'm always singing along 😂

@ACTHEGOAT Год назад

How tf does that sound like "turuttu" to you ?

@abdullahb2068 5 лет назад

you are amazing what the teacher do in 50 min you did it in 5 min

@JihadAlAnsari 5 лет назад

I always wondered why it would take them 30 minutes to explain a concept which can be done in 2 minutes.

@pepitobenegas 4 года назад

@@JihadAlAnsari because then they wouldn't have jobs lol

@adamigbaria5881 3 года назад

اا والله ^_*

@vasanthisuperkaruna3407 3 года назад

indeed

@willbgm5x5 2 года назад

@@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!

@charlesyuan Год назад

It's my 2nd semester of first-year university chemistry... and of course, Professor Dave saves me once again.

@yunyung Год назад

Same here and agreed 🥹

@AbdelRadhwan Год назад

@@yunyung lmao same as well

@riruruuu 10 месяцев назад

Then why am I doing this in 10th grade. Not fair

@riruruuu 10 месяцев назад

Then why am I doing this in 10th grade. Not fair

@keviisam5200 7 месяцев назад

@@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

@KFUURE 3 года назад

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.

@gabriels2395 6 лет назад

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!

@thestrange6 4 года назад

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 2 года назад

Same bro

@alexandergeorgebradley8707 5 лет назад

Thanks Professor Dave for doing something in four minuets my professor couldn't do in forty minuets. Explain the material.

@ethanp4050 7 лет назад

I didn't do the comprehension I was to busy jamming to the sick beats

@ProfessorDaveExplains 7 лет назад

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 7 лет назад

Wow you're right I'm adding it to my playlist rn ✌🏾

@EbonyPope 2 месяца назад

@@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.

@ruxiversi 4 года назад

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

@MasAgungLaksana 5 лет назад

It was a couple years I haven't learn about different of heat capacity or specific heat. Thanks for explaining us.

@Jamieeee-ht7qk 5 лет назад

How do I always get suggestions on what I'm currently learning in class!? 😮 Professor Dave is psychic!

@kameiku 2 года назад

This dude is so amazing even the teacher all over the philippines LINKED his vids for me and my class mates to whatch

@comchemistry9381 2 года назад

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.

@OddFoxxeP 4 года назад

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 2 года назад

so u are a studend of thermodynamics?

@EbonyPope 2 месяца назад

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.

@anubhavyadav4113 3 года назад

The best part is your video is concise and useful . thanks

@kevinkennedy1667 7 лет назад

Awesome video hit the nail right on the head

@pranavsrinath5076 7 лет назад

sir, will you define heat capacity with some other lab activities??

@morganburke2286 6 лет назад

This really helped my understanding of this topic thank you!

@nhynearanilla7601 6 лет назад

Hello sir.. thanks for this video. Just wanna ask how to measure sp of soluble solids like sugar? pls reply thanks

@oliviaadel594 6 лет назад

You are very fantastic prof. Thank you for making this channel 😊😊👍👍👍

@angeliemaebonaobra4448 7 лет назад

Thank you Professor Dave!!!!!

@abeladugna1897 3 года назад

I love this man! Thank you so much, your amazing! ❤️

@randomguy36j98 3 года назад

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.

@witty_me 6 лет назад

Dave, you are really good.Thank you very much.

@aya5468 2 года назад

Wow, I needed that visualization. 👀👌 This is good stuff.

@JacobNignandorMobe 3 месяца назад

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?

@ruivivarjohncarls.149 3 года назад

Liked and subscribed. Thank you professor Dave, this is dope

@shlokmorbale7792 2 года назад

thank you professor Dave, for eplaining me calorimetry in simple words.

@xoDosu 4 года назад

I love your content so much but bro you your intro is the funniest thing ever it really made my day

@sledfitness 3 месяца назад

Very insightful helped me to understand that coffee cup experiment

@lazr9227 5 месяцев назад

thank you so much jesus i have a test tomorrow and you came in clutch ❤❤❤❤❤❤❤❤

@damongeo840 3 года назад

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?

@daflemubarik5000 7 лет назад

thank u very much really its clear more about calorimeter

@shafianizan6808 6 лет назад

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?

@alexiskironde7413 4 года назад

Thankyou for the video on Heat Capacity, Specific Heat, and Calorimetry.-Alexis Kironde.

@pmmeyourdadjokes9811 3 года назад

Such a wholesome comment written like an email

@makllxbjsnjwlr 2 месяца назад

This is RU-vid you didint have to be that formal take a chill pill😂

@LP.H967 Месяц назад

I need the latent heat and specific heat capacity of "Geraniol"....Can you help me?

@Seif97ify 4 года назад

What's the difference between ''heat transfer'' and ''change in temperature''?

@user-hv6ef9ie1g 8 месяцев назад

2:31 Is the specificheat before or after the water absorbs the heat from the rock?

@ahnafajmain4366 3 года назад

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!!

@loyan.k 8 месяцев назад

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?

@jasminecoca1170 7 месяцев назад

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

@bhavishyasharma7834 2 года назад

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?

@venkateshwarraovenkateshwa8837 7 лет назад

very nice explained sir

@taimgamer9648 5 месяцев назад

What is the initial value of metal temperature?

@arnan.k4297 6 лет назад

Your videos r very useful but can u plz talk about thermal decompostion

@laurend1307 Год назад

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?

@mcvihemba Месяц назад

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.

@aristondaganioiii2670 Год назад

where did he get the 9.25g and 66.2 C in his computation for specific heat of metal?

@strawberrystudying 11 дней назад

does this mean that specific heat or q=+ve , it is raising temperature by 1 degree

@thatboi7492 4 года назад

Great videos! Keep it up!

@buildingfilming Год назад

Awesome comprehension question!

@syzy1442 4 года назад

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?

@Emelliieee 4 года назад

wouldnt q= -850? since delata T =final - initial? ---> (34.5-28.7) ...?

@asociatiaademed7417 Год назад

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?

@Catnipis Год назад

Amei a explicação ❤🎉 muito obrigada! O Brasil te assiste!!

@nthumara6288 7 месяцев назад

sir wht we define heat capacity from celcias instedof kelvin

@thedangerousjitu694 5 лет назад

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 5 лет назад

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!

@user-jn7uh4ej7u 7 месяцев назад

very great video! prof dave

@Hiba-gd8rz Год назад

That last q helped me understand that I understood. Tnku

@amitnayak5869 5 лет назад

Sir, how specific heat different from conductivity or with other mode of heat transfer....

@Adarsh_Negi 3 года назад

Specific heat is not a means of heat transfer , it is the characteristic property of every substance and is different for all.

@jasminaktertonni6691 3 года назад

I am from Bangladesh. Really your lecture help me.

@liam5075 Год назад

3:45 Why is the metal's temperature variation 80.5 °C? Shouldn't it be 5.8°C?

@chahatdhanda8094 6 лет назад

Nice lecture

@biraodra8869 6 лет назад

That's great explanation

@analaurajimenezmorales6595 5 лет назад

I have my examen in 1 hour and I so nervious, thanks for help me

@ryzajanebaluyot4631 9 месяцев назад

THANK YOU FOR THIS!!!

@Rudra-mm1qf 3 года назад

lovely explaination

@noelyperez2582 4 года назад

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 3 года назад

Really? kkkkkkk I'm from Brazil

@jiyagayathri8148 3 года назад

I will do anything to make u my physics teacher....Thanks for these amazing videos !!!!!!! 🤩

@prashant4123 2 года назад

He looks like Ranveer Kapoor

@warlock2158 3 года назад

Thanks Dave.

@mauwww_ 2 года назад

THANK YOU !

@marklarryorigenes8782 4 года назад

Don't we use -q for released?

@ComandaKronikk 7 лет назад

I love you Professor Dave

@sabrine19 2 года назад

Ive question why the matters have a different in the heat capacity it's a due the number of a atomes right!? Like the capacity of the iron matter and water Why this matters have a different of that!!

@bhartkumarlohana5707 6 лет назад

Nice lecture sir

@AhmedMAdly 4 года назад

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 4 года назад

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 4 года назад

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

@michellechal4669 7 лет назад

what is the calibration constant?

@mattpachec0 5 лет назад

Thank you so much !!

@blanket6863 6 лет назад

thank u so much omg

@AliRaza-fw4jo 4 года назад

i have a question that how we find the specific heat of copper at 300 Kelvin...can u explain this experiment with instrument

@ProfessorDaveExplains 4 года назад

by the method shown in this video, measuring the temperature change when the hot metal is put in water

@ronaldkoim1461 Месяц назад

The best explainer❤

@mcatstudy8045 3 года назад

Hi, how do you get the change in temp of metal equal 66.2 ) at 2:49 min? thank you

@mcatstudy8045 3 года назад

Did you take 100 degree as initial temp of metal and final temp is after the metal temp equilibrate with liquid at 33.8 degree?

@ProfessorDaveExplains 3 года назад

yep that's right

@arnoldthegreat4138 8 лет назад

thamks

@taylorherring5201 4 года назад

hey how do I determine that change in heat of the metal ? if the metal was originally 115 degrees Celsius and it gave off 5.8 degrees to water ... how was the change in temperature 80.5?

@ProfessorDaveExplains 4 года назад

the final temperature of the water and metal is the same

@taylorherring5201 4 года назад

okay Thanks

@Naveen_Anan 3 года назад

Superb bro!!

@curioscopy2633 6 лет назад

Bless this video

@sarafarid3025 3 года назад

I am from Egypt , Really Thnx 💙

@Cyberbully008 Месяц назад

to think this the same dude who be cussin out flat earthers i love this guy frl

@oviyanaresh5775 7 лет назад

thank you sir.l was not able to understand the concept clearly when l was taught at school.this video helped me tremendously....😂😂😂😂😁📣

@johnfei434 5 лет назад

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 5 лет назад

buddy all of my tutorials are immaculately organized into playlists! did you even think to check before commenting?

@tinkertaylorm0624 6 лет назад

Thanks!!

@divinephanes 3 года назад

I'm confused, how did you calculate the specific heat of an object?

@ayinguimel3570 3 года назад

Me too 😢😢😢

@maktoomalshamsi6899 3 года назад

how can I solve for the initial temperature for the metal, please help

@ProfessorDaveExplains 3 года назад

Same as temperature of water, usually boiling so 100 C.

@idealthinker101 5 лет назад

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 5 лет назад

it's just the change in temperature!

@kevinakussah4736 4 года назад

But how did you work that out

@Ma-bx8bz 4 года назад

@@kevinakussah4736 final temperature minus initial temperature

@loyan.k 8 месяцев назад

Does heat capacity of a material different due to the phase? Such as ice and water?

@ProfessorDaveExplains 8 месяцев назад

Yep

@amiralclaude3376 6 лет назад

Very intelligently explains. Prof Dave is the best

@asmaas4427 5 лет назад

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 5 лет назад

the initial temperature of the metal is 115 so you have to use that!

@puneetpalsingh4383 4 года назад

@@ProfessorDaveExplains sir why we are taking the subtraction whether both are differently placed?

@bubblee1445 Год назад

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)?

@TheThorRs 2 года назад

a little lost on the final answer if anyone can help. Why did we subtract the heat of 115 for the metal by the final temperature of the water. I thought we were looking for the specific heat of the metal only

@ProfessorDaveExplains 2 года назад

that's the change in temperature for the metal