Thermodynamics (part 5)

[SuperMrBentley]

now do it with derivatives, it gets much more interesting!!

[Kricardose]

I am very happy to see the vidoe Example problem involving PV=nRT after you give this

[bebeheuy]

I Love The Video It Can Increase My Knowledge Example problem involving PV=nRT

[Mjhond]

Steady I Really Like This Video Example problem involving PV=nRT

[phonesplanet]

is it necessary in thermodynamics to find the number of molecules in a "substance"?

[majormuss]

i agree with DheerShah4, this is quite basic stuff and college physics has rather difficult topics and questions.

[moka22051]

U LIE WEN U SAY U DONNO DUDE...U fReaKin KnoW IT!!!!!! go go khaan

[SuperMacbeth123]

Do you have the zeroth law of thermodynamics ?

[imalwayswatchingu00]

SOOOO CONFUSING!

I'll come back to this in a month or 2, and I'll be like - easy peesy!

[daskraut]

//molecules// of helium?? (serious question !)

[wolfofkandor247]

that was "saint... or"

[wolfofkandor247]

thermodynamics was my first of your vids, great refresher courses, but not everone gets an American education... till now, you are a sain... ir at least a CNN hero!

[1panchoc]

Pure altruism, the world needs more people like you. Your videos help me a lot Greetings from Argentina

[optrex1]

that is one deflated baloon :P

the minute you open it it will suck air in :P

[ballsoffury4]

R=.0821 for the units used and it can also be any number of moles but you are right 1 mol=6.02X10^23

[KARISMAI1HQI]

enthalpy me neeeeeeed im hungry



[PianoSkills101]

Can you start making more advanced videos. They are great but I think your stuff is a little too basic.

[rotflmaopmpqxyz]

So now m can mean mass, meters, or mole? It's so confusing!

You still do a great job of explaining though, so thanks

[lumaix]

>>>>Everyone expecting to find entropy and enthalpy and all those stuff, go to the chemistry playlist. It includes videos that teach the same as these thermodynamics videos with some other extra knowledge. I watched those first but couldn't convince myself to skip these videos here.

[KingJulien234]

your videos rock but your memory for constants sucks xD

[tobbebobbbe]

3 words I LOVE YOU! Thx for help!

[whereisbob]

yeh i agree with alot of the other posts, its a good video but v basic pv=nrt is pretty basic stuff there isnt anything on enthalpy, entropy, mass flow and volume flow rates, energy transfer, work or efficiency + the even more complex stuff that melts my brain :S

[mczeljk]

You said molecules of Helium at the end. Actually it should be atoms because Helium is a noble gas

[Mirrorized89]

is there a part 6 of thermodynamics? would be awesome, thanks for the great videos!

[luckyD1993]

yes i need more advanced thermaldynamics

[captainLAGER]

5 Pascals? Where is that balloon, in outer space? 100 kPa would have made more sense.

[jsen920]

Could you post more advanced topics, such as first law of thermodynamics and second law of thermodynamics?

[ppatbmw]

thanks a lot man you've helped me so much in all the chapters of my physics class

[jeffgrayrayne]

in ideal gas law what i learnt is that

PV=mRT

where m is mass and R is taken as 0.287

is this the same formula in the example given in the video??

is it necessary in thermodynamics to find the number of molecules in a "substance"?

im getting all confused..

[legodar]

the R you are saying is the constant R of air that is 0.287 KJ/kg-K. It is different from the R (with bar on top) that is equivalent to 8.314 J/mol-K. Its just they have look alike equation but they are totally different. Mass is different from the number of moles. Here, he is trying to determine the number of moles. Hope it helps

[michalchik]

N not M,

N is the number of moles of a substances (that is the number of atoms or molecules)

[bronze83]

@jeffgrayrayne

PV=mRT is the same formula as PV=nRT with different units of measurement.

when "R" is 0.287 you are using Liters/kg K (check to make sure)

"m" is when the substance of study is given in mass while "n" is when the substance is given in moles.

It was just an example showing how the formula can be used.

[kittykattykoo]

Thank you. I was expecting to see some of entropy and enthalpy though..

but again, thank you

[dalcde]

Everyone expecting to find entropy and enthalpy and all those stuff, go to the chemistry playlist. It includes videos that teach the same as these thermodynamics videos with some other extra knowledge. I watched those first but couldn't convince myself to skip these videos here.

[daramravi]

thank you man

[DheerShah4]

IT was great but basic. I expected sumthing more

[elfera89]

yeah..too basic..

[peiwmr]

that is probably not a baloon, it is a vaccum.

Still a very good example

[Duckalore]

where's the vidoe on entropy?

[MrAdamchadima]

@Duckalore In chemistry section

[pharmwanab]

this is good!

[anarchycastro]

i have no need for any of this ---- but i watch anyway :)

[rick7917]

Thanks! Can you make more? such as the laws of thermodynamics and such?

[Max11551]

Although I don't get where the universal gas constant comes from. Guess I'll Wiki it.

[Max11551]

That was very clarifying actually. I have a thermodynamics test coming up and worked examples like these are really helpful.

[bradq]

thanks for the video. Nice of you to make the effort.

brad