Heat Capacity, Specific Heat, and Calorimetry

[@charlesyuan]

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

[@yunyung]

Same here and agreed 🥹

[@AbdelRadhwan]

@@yunyung lmao same as well

[@riruruuu]

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

[@riruruuu]

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

[@keviisam5200]

@@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

[@abdullahb2068]

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

[@pepitobenegas]

@Ali Aljibari because then they wouldn't have jobs lol

[@adamigbaria5881]

اا والله ^_*

[@vasanthisuperkaruna3407]

indeed

[@willbgm5x5]

@Jihad Aljibari 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!

[@amv9401]

@@pepitobenegas What I wish is that they posted there lessons online or maybe in a course so people can rewatch and review. They can also make money from this aswell but they don't do it which makes life so much harder

[@marufhasan1684]

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

[@fishplayztoh]

Lol

[@DvolWOLF]

It's dave*

[@luistomaslloyd5463]

@@DvolWOLF no it's chemistry Jesus

[@1alex92]

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

[@ACTHEGOAT]

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

[@KFUURE]

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.

[@marlyc.2931]

this was the one thing i was confused about, thank you so much

[@gabriels2395]

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]

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]

Same bro

[@ethanp4050]

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

[@ProfessorDaveExplains]

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]

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

[@comchemistry9381]

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.

[@alexandergeorgebradley8707]

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

[@OddFoxxeP]

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]

so u are a studend of thermodynamics?

[@bsszds77]

Yes, it is better to use international units. This is more standardized and less likely to cause ambiguity.

[@alexiskironde7413]

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

[@pmmeyourdadjokes9811]

Such a wholesome comment written like an email

[@makllxbjsnjwlr]

This is KZbin you didint have to be that formal take a chill pill😂

[@kameiku]

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

[@lazr9227]

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

[@Jamieeee-ht7qk]

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

[@vivianghobrial3307]

it took you 4 mins to explain an hour lecture from my professor. thank you

[@kleinfelter8247]

Our course never differentiated heat capacity and specific heat so this video clears up so many questions I had 🎉

[@muhammadmukhtar2802]

holy after 9 years this is still helpful❤

[@asociatiaademed7417]

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?

[@jasminaktertonni6691]

I am from Bangladesh. Really your lecture help me.

[@morganburke2286]

This really helped my understanding of this topic thank you!

[@noelyperez2582]

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]

Really? kkkkkkk I'm from Brazil

[@kevinkennedy1667]

Awesome video hit the nail right on the head

[@laurend1307]

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?

[@damongeo840]

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?

[@amiralclaude3376]

Very intelligently explains. Prof Dave is the best

[@mcvihemba]

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.

[@bhavishyasharma7834]

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?

[@angeliemaebonaobra4448]

Thank you Professor Dave!!!!!

[@ahnafajmain4366]

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!!

[@anubhavyadav4113]

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

[@analilinacorda2196]

I like how simply Professor Dave explains science stuff

[@akhilabhigyan]

I am Indian Sir ...really your explanations are better than our teachers..continue making videos sir

[@taimgamer9648]

What is the initial value of metal temperature?

[@DarkXDs]

thank you jesus

[@annaleeedwards377]

😂

[@xoDosu]

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

[@randomguy36j98]

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.

[@ComandaKronikk]

I love you Professor Dave

[@sarafarid3025]

I am from Egypt , Really Thnx 💙

[@jiyagayathri8148]

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

[@prashant4123]

He looks like Ranveer Kapoor

[@aya5468]

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

[@sledfitness]

Very insightful helped me to understand that coffee cup experiment

[@Cyberbully008]

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

[@abeladugna1897]

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

[@matrixate]

Specific Heat of Water is 4.186 J/gC for the comprehension part.

[@gmed26]

TheChosenOne thanks. i was going crazy as i was using 1 cal/g C and getting the wrong answer hahah

[@keylal3339]

how does he get 4.186?

[@dre7teen530]

@@keylal3339 exactly i want to know as well

[@bananadog152]

What would the research question for the coffee cup experiment be?

[@Seif97ify]

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

[@ronaldkoim1461]

The best explainer❤

[@shlokmorbale7792]

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

[@liam5075]

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

[@philippesindrell3836]

I'm confused too

[@Attalla-t9b]

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

[@Divit-12]

Really helped subscribe to this channel

[@Divit-12]

do it

[@juliadurbeck1597]

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]

water is 1.0 g/mL!

[@oliviaadel594]

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

[@MasAgungLaksana]

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

[@witty_me]

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

[@divinephanes]

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

[@ayinguimel3570]

Me too 😢😢😢

[@ChiChi-ul9be]

Why does the mL of the water equal the grams of water? How do you come to that conclusion?

[@ProfessorDaveExplains]

Water is 1.00 g/mL at room temperature.

[@carultch]

Historical reasons. An early idea in defining the gram and kilogram was that milliliters of water would correspond to grams of water. This isn't strictly true with today's refined definitions, but it is approximately true enough that you can still get accurate calculations by assuming water's density is exactly 1 gram/mL.

[@loyan.k]

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?

[@daflemubarik5000]

thank u very much really its clear more about calorimeter

[@Jamsome59]

I’m literally watching this 2 hours before my AP chem exam. 😂

[@coopersutherland8550]

I'm watching it during an exam lol

[@shafianizan6808]

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?

[@Curated_by_Komal]

Each of your videos first illuminates my mood and then your reference illuminates my concentration power.😇

[@christopherosborn9141]

You should probably change the definition of specific heat capacity at the start to 1kg not 1 gram.

[@buildingfilming]

Awesome comprehension question!

[@joshrosal5573]

Thank you My physics teacher is ass You made my day

[@Hiba-gd8rz]

That last q helped me understand that I understood. Tnku

[@pranavsrinath5076]

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

[@asmaas4427]

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]

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

[@puneetpalsingh4383]

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

[@bubblee1445]

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)?

[@analaurajimenezmorales6595]

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

[@venkateshwarraovenkateshwa8837]

very nice explained sir

[@brightchrist-x6b]

very great video! prof dave

[@jasminecoca1170]

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

[@ruivivarjohncarls.149]

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

[@arnan.k4297]

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

[@JacobNignandorMobe]

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?

[@cyoon87]

deltaT = final temp - initial temp for the metal, delta T= 34.5- 115.0 = -80.5 it is a negative number. why was a positive value put in for calculation?

[@cyoon87]

actually I think I got the answer to my own question. q(absorbed) should equal to negative q(released). so in solving for the metal, it should be -850 J= s (4.82g)(-80.5 degree Celsius) s=2.19 (a positive value) is this correct?

[@mer2760]

@@cyoon87 thx bro i was confused about it too

[@ICantSeeYourRepliesDickhead]

@@cyoon87 yeah probably, I was confused but that cleared it up. It’d still be positive

[@arasavillisuryapratap4993]

What is the difference between SPECIFIC HEAT and CALORIE? Please tell me?

[@ProfessorDaveExplains]

Please watch this.

[@IgorRimi]

I need some help. Could someone provide me with the specific heat of caramel color? If possible, please send a document. Thanks.

[@amitnayak5869]

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

[@Adarsh_Negi]

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

[@idealthinker101]

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]

it's just the change in temperature!

[@kevinakussah4736]

But how did you work that out

[@Ma-bx8bz]

@@kevinakussah4736 final temperature minus initial temperature

[@johnfei434]

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]

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

[@thatboi7492]

Great videos! Keep it up!

[@jayanthiravi4558]

Hi sir it is very useful.tq.😊😊 U r looking like our Bollywood actor Ranbir Kapoor......

[@andrewleonardo395]

Ha sahi hai

[@ITZNOOBRA-k4c]

why it is not -80.5 degree celcius as dell T is T final - T initial

[@sparklingdiva717]

∆T = T final - T initial

[@Naveen_Anan]

Superb bro!!

[@mcatstudy8045]

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

[@mcatstudy8045]

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]

yep that's right

[@aristondaganioiii2670]

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

[@negativaura]

for the comprehension part don't you have to convert ml --> grams because "m" is for grams in he equation?

[@negativaura]

nvm

[@AsthaYadav-tz2dx]

I am preparing for IIT😊

[@Commander_Appo]

Yo, we're watching this for our Chem class at MSOE

[@BeasstShorter]

Thanks Dave.

[@mauwww_]

THANK YOU !

[@ryzajanebaluyot4631]

THANK YOU FOR THIS!!!

[@syzy1442]

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?

[@rhickgonzales2002]

Thank you again Chemistry Jesus!

[@chahatdhanda8094]

Nice lecture

[@Rudra-mm1qf]

lovely explaination

[@biraodra8869]

That's great explanation

[@paulbushen4049]

Mathematically you can use grams, but the SI unit of mass is the kg. So specific heat capacity is often quoted in joules per kg per degree C. (Wouldn't it be nice if the SI unit was gram)

[@ruxiversi]

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