Consider that 3 mols of a certain ideal monoatomic gas occupy a volume of 8.3 liters in a temperature of 300k. Keeping the pressure constant, the temperature is raised to 600k

What's the pressure?

(rushed translation from portuguese, hope it's understandable)

What formula can i use Delta T and pressure at the same time? Or it's something else? Help please x_x

Uh... probably useless bump?

What the heck is a Mol?

molecule.

@flow - From what I think I remember

pdv = nRT

n= number of mols

R = constant (look it up)

T = temp

p = pressure

dv = delta of volum.

This is me half asleep trying to remember. If I am wrong, sorry.

Sorry I suck at physics... but  know a million excuses for not doing homework... in this case you don´t even need an excuse... if your book doesn not explain what to do and your teacher didn´t explain it right there is nothing you can do... if the teacher did explain and you didn´t listen say you where occupied with private girl stuff... girls get a free pass with that line on anything once a month... if you are not a girl you need something else... dead pets and relatives are for extreme cases only... can you cry on command ??? thats a real livesaver... are you willing to hurt your writing hand... or both hands ??? a little defotion will go a long way... if your a pansy you can fake it with some bandages... if you want to play it clean however just solve the problem as far as you can and tell the truth... I hear that can work but I never tried it myself ???

@ wfz

mol, the symbol (always lowercase) for mole, the SI unit for an amount of substance

By my friend wikipedia

@ marciosmg

Eu ja tenho essa formula PV = NRT, Mas eu posso fazer dela PV = NR Delta T? Porque a pressão eh constante, e já que N e R não mudam, soh quem muda eh V... Entao sera que ainda tenho que descobrir o V final? Ai eu teria que fazer PVT = PoVoTo, e já que P eh constante, significa VT=VoTo, se eu tenho as duas temperaturas, ja descubro o V, e ai da pra fazer a outra equação... Pow, fui raciocinando na hora aki xD, mas agora confirma por favor que eu posso fazer PV = NR Delta T e da pra eu fazer a formula e descobrir a pressão.

I already have this PV = NRT formula, but can i make it PV = NR Delta T? Because pressure is constant, and since N and R don't change, the only one who changes is V.... So i wonder if i have to discover the resultant/final V? So i'd have to do PVT=PoVoTo, and since P is constant, means that VT = VoTo, and since i have both temperatures, i can discover V, and so i can make the other equation... Wow, i just thought of this all right here xD, but now please confirm to me that i can make PV = NR Delta T and if i can, i can make this formula and figure out the pressure.

Help me please people, looks like i'm almost there... =X

Olha, cara, eu não tenho certeza, mas eu acho que pode sim.

I guess i got it covered now, i found 3604 aproximately...

Don't ever try it, duderino, my brain is bleeding, next time i'll break my leg and have someone else do it for me out of pity

Since we're on a physics thread:

The angular momentum of a flywheel having a rotational inertia of 0.250 kg·m2 about its axis decreases from 3.40 to 0.600 kg·m2/s in 2.50 s.

(a) What is the average torque acting on the flywheel about its central axis during this period?
-1.12 N·m
(b) Assuming a uniform angular acceleration, through what angle will the flywheel have turned?
20 rad
( c ) How much work was done on the wheel?

Obviously, I got a & b but I can't seem to get c. Google has failed me in terms of the proper formulas.

@tarheel81

Sorry dude, looked through my whole physics notebook but that's out of my league right now :(