Heat Capacity, Specific Heat, and Calorimetry
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- Опубликовано: 24 ноя 2015
- 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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"He knows lot about science stuffs, Professor David explains! Turuttu ! "
Lol
It's dave*
@@DvolWOLF no it's chemistry Jesus
I love that too lol I'm always singing along 😂
How tf does that sound like "turuttu" to you ?
you are amazing
what the teacher do in 50 min
you did it in 5 min
I always wondered why it would take them 30 minutes to explain a concept which can be done in 2 minutes.
@@JihadAlAnsari because then they wouldn't have jobs lol
اا والله ^_*
indeed
@@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!
It's my 2nd semester of first-year university chemistry... and of course, Professor Dave saves me once again.
Same here and agreed 🥹
@@yunyung lmao same as well
Then why am I doing this in 10th grade. Not fair
Then why am I doing this in 10th grade. Not fair
@@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
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.
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!
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
Same bro
I didn't do the comprehension I was to busy jamming to the sick beats
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.
Wow you're right I'm adding it to my playlist rn ✌🏾
@@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.
Thanks Professor Dave for doing something in four minuets my professor couldn't do in forty minuets. Explain the material.
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.
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! ;]
so u are a studend of thermodynamics?
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.
This really helped my understanding of this topic thank you!
Thank you Professor Dave!!!!!
I love this man!
Thank you so much, your amazing! ❤️
Awesome video hit the nail right on the head
How do I always get suggestions on what I'm currently learning in class!? 😮 Professor Dave is psychic!
Liked and subscribed. Thank you professor Dave, this is dope
The best part is your video is concise and useful . thanks
You are very fantastic prof. Thank you for making this channel
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This dude is so amazing even the teacher all over the philippines LINKED his vids for me and my class mates to whatch
Dave, you are really good.Thank you very much.
It was a couple years I haven't learn about different of heat capacity or specific heat. Thanks for explaining us.
Great videos! Keep it up!
I love your content so much but bro you your intro is the funniest thing ever it really made my day
Wow, I needed that visualization. 👀👌 This is good stuff.
thank u very much really its clear more about calorimeter
Thankyou for the video on Heat Capacity, Specific Heat, and Calorimetry.-Alexis Kironde.
Such a wholesome comment written like an email
This is RUclips you didint have to be that formal take a chill pill😂
sir, will you define heat capacity with some other lab activities??
very nice explained sir
very great video! prof dave
to think this the same dude who be cussin out flat earthers i love this guy frl
thank you professor Dave, for eplaining me calorimetry in simple words.
What is the initial value of metal temperature?
Very insightful helped me to understand that coffee cup experiment
THANK YOU FOR THIS!!!
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.
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.
Amei a explicação ❤🎉 muito obrigada! O Brasil te assiste!!
That's great explanation
Nice lecture
Thank you so much !!
Awesome comprehension question!
lovely explaination
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
Really? kkkkkkk I'm from Brazil
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!!
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thamks
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?
THANK YOU !
Thanks Dave.
Superb bro!!
Thanks!!
thank you so much jesus i have a test tomorrow and you came in clutch ❤❤❤❤❤❤❤❤
I love you Professor Dave
Nice lecture sir
Hello sir.. thanks for this video. Just wanna ask how to measure sp of soluble solids like sugar? pls reply thanks
Your videos r very useful but can u plz talk about thermal decompostion
Bless this video
That last q helped me understand that I understood. Tnku
What's the difference between ''heat transfer'' and ''change in temperature''?
i got more confused but thanks
The best explainer❤
Thank you bro 🙏
Thank you sir
Thank you
My physics teacher is ass
You made my day
Helps alot
vry usefull..gd way of teachnggggg
Thank you
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?
Sir, how specific heat different from conductivity or with other mode of heat transfer....
Specific heat is not a means of heat transfer , it is the characteristic property of every substance and is different for all.
2:31 Is the specificheat before or after the water absorbs the heat from the rock?
I’m literally watching this 2 hours before my AP chem exam. 😂
I'm watching it during an exam lol
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?
I am from Bangladesh. Really your lecture help me.
I have my examen in 1 hour and I so nervious, thanks for help me
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?
I will do anything to make u my physics teacher....Thanks for these amazing videos !!!!!!! 🤩
He looks like Ranveer Kapoor
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?
the initial temperature of the metal is 115 so you have to use that!
@@ProfessorDaveExplains sir why we are taking the subtraction whether both are differently placed?
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)?
More examples, please!
I'm confused, how did you calculate the specific heat of an object?
Me too 😢😢😢
Omg. Thank you! Im a chemistry major but this type of problem was so confusing to me. Thanks!
Zeima Rodriguez bruh i’m in 6th grade tryna figure this out😭
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?
what is the calibration constant?
Very intelligently explains. Prof Dave is the best
Thank u sir
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?
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
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
where did he get the 9.25g and 66.2 C in his computation for specific heat of metal?
thank you sir.l was not able to understand the concept clearly when l was taught at school.this video helped me tremendously....😂😂😂😂😁📣
Don't we use -q for released?
Specific Heat of Water is 4.186 J/gC for the comprehension part.
TheChosenOne thanks. i was going crazy as i was using 1 cal/g C and getting the wrong answer hahah
how does he get 4.186?
@@keylal3339 exactly i want to know as well
I am from Egypt , Really Thnx 💙
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?
Thanks
does this mean that specific heat or q=+ve , it is raising temperature by 1 degree
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?
I like how simply Professor Dave explains science stuff
I need the latent heat and specific heat capacity of "Geraniol"....Can you help me?
thanks,
sir wht we define heat capacity from celcias instedof kelvin