Hess's Law Example

[biggz81]

You're my hero. Thank you

[ledzeppelinrawks]

It's funny how much better you are than most teachers who attempt to teach this subject xD I understand much more watching you in 12 minutes on youtube than I do in two days of my AP Chem class. Thank you much!

[thinkbignevrologia]

The answer in the change of enthalpy for the net equation was 1 significant figure off. Actual answer for the change of enthalpy of the reaction is: -74.80 kJ/mol-rxn. Overall great video though!

[JaS0nN11]

man im going to have a chemistry test tmr, u saved my ass buddy ;)

u juz find urself a happy subscriber ;D

[LikeNoOne91]

THANKS DUDE , YOU SAVED MY LIFE

[goldensilverstar]

Wow, he explained this in a different way, he actually showed how everything works and showed the proof......thank you Proffesor almighty Khan.

by the way can someone tell me how to get that awesome transformer looking virtual calculator?

[heywhatsgood1000]

could you do one with 5 equations please :)

[rpayne121]

Final tomorrow! lol

[Zumerjud]

OMG THANKKKKKKK YOUUUUUU!!!!!!!!!!! :D

[TheSammypickle]

this man wields such power, he knows everything

[gunzhater]

the dislike is probably my chem professor because she can't teach for her life

[imsochic]

WHY THE HELL DO I ONLY UNDERSTAND SHIT ON YOUTUBE AND NEVER IN CLASS WHY

[cassinique]

@imsochic ikr!! LOL

[iamK007]

Thank you !

[Ibahz]

Thank you dr. khan

[howlpanda]

I love the virtual calculator.

[5claymen]

this sort of reminds me or vectors...

[JustmeKasie]

the best teacher of all time.

[SOLOVEFUCKINGmuz]

but when we get the result, where in the equation do we place it, in the reactive of the product? and is it a plus or a minus?

[brothodontist]

Thanks for the vid. Very well explained.

[BritishSpock]

God bless you

[01theone02]

shouldn't it be Hess' law?

[mashafasha5]

Thank you for this. i hope I pass my chem test tommorow.

[debiligor]

haha I also make that negative/minus mistake on my TI

[peterxu42291]

at 10:45 Isn't Hess's Law to subtract the Enthalpy of the left from that of the right? Shouldn't it then be (890.3) - (-393.5 - 571.6)? Why does Sal just add them?

[jmendez080]

I guess Sal is mistaken here, the H2 (g) is an elementar molecule, o it doesn t count for the entalpy. if u remove it, everything will be fine! and yeah, -(- = + .

[jmendez080]

@peterxu42291

I guess Sal is mistaken here, the H2 (g) is an elementar molecule, o it doesn t count for the entalpy. if u remove it, everything will be fine! and yeah, -(- = + .

[Kakarot21591]

How ironic that you would cover this subject from my very same Chemistry textbook right after we covered it in class!

[Annie10k]

Absolutely Love It!... :)

One of my Fav subjects in Chemistry...

:)

[boratilike]

thank you so much for your videos

[bbaa100200]

hi, may i ask what software are you using?

[invisible0tom]

Enthalpy and hess's law were the bane of my existence in AS chemistry.

And ill say it now, your biology videos are excellent esp. the photosynthesis ones.

[WannabeRetro]

@invisible0tom AS chemistry was the bane of my entire life. As is A2 chemistry!

[langtangticky]

Peace

[Sorrow514]

Great video Salman, just learned something I was absolutely stumped on at my chem lecture. THANKS ALOT!

[stringcheez8]

Wish I would have seen this yesterday before my test hahaha

[dakeeper135]

@stringcheez8 me 2...................i had a termo test yesterday and i totally forgot hess' law

[CravenFireX]

@stringcheez8 I totally bombed my test. Holy shit, I felt so bad after.

[stringcheez8]

@CravenFireX Sorry about that =/ I'm scared to see what I got now...