A level Physics(ideal gas) question?

• prg

  18 Dec 08, 17:25

  The density of nitrogen at s.t.p = 1.251 kg/m^3 . 

  Calculate the r.m.s velocity of nitrogen molecules.

  Show your working...

  Thanks : )

• 16/f/lonely

  18 Dec 08, 17:25

  I beg your pardon, but what's rms?

  I think I've forgotten.

• eagle

  18 Dec 08, 17:28

  erm...

  from your other thread,

  p = (1/3)(Nm/V)<c²>
  p = (1/3)(density)<c²>

  At s.t.p, so p = 1.013*10^5
  so <c²> = 242925.6

  r.m.s. = 492.9 m/s

   

  Do check, might have some careless mistakes

• eagle

  18 Dec 08, 17:29

  Originally posted by 16/f/lonely:

  I beg your pardon, but what's rms?

  I think I've forgotten.

  root mean square