Intro to Chemistry 7.6: Gas Stoichiometry (1/2)

[BIGBLACKBEEFYBALLS]

omg why does my teacher suck so much and these youtube videos ACTUALLY help me?

[wirehot09]

im getting 12.5L? what am i doing wrong?

[levlinks24]

THANK YOU!!! I learned this in like 10 minutes with you guys than spending like 3 hours with me teacher!

[SargentLimpDick]

uhh wheres kahn academy when you need it

[Iamorton]

you guys are awesome , i have an exam tomorrow and this helps me review . you guys should become a youtube partner and get paid for this .you got a new subscriber from Canada

[ZeplinZed]

This is great, better than my teachers explanation.

[paul1reed1smith]

how did you get the 0.0821?

[ghidfg]

@paul1reed1smith he said R is the constant which is 0.0831. I thought it was 8.314

[adiavoy]

@ghidfg

hmm... no, the constant (R) is always 0.0821... or that's what i was taught if you're plugging it into PV=nRT

[EvanAlmightyy94]

@adiavoy You use 0.0821 as the constant when your pressure is in ATM. when your pressure is in kPa, you use 8.314 ;)

[adiavoy]

@ghidfg

oh actually nevermind, it is 8.314 if you're using joules for the temperature, i usually use kelvin.

[Alexis085763]

@ghidfg There are 3 different constants, though I believe the most commonly used R is 0.0821. That is if you are using atm as your unit of pressure. If is 8.314 (which is what you were assuming), it would be if the unit of pressure were in kPa. Then if the unit of pressure were in mm Hg, your constant would be 62.4. (:

@Learning4Mastery Thanks so much for this video, it really cleared up a lot! (: