January 09, 2025, 06:46:25 PM
Forum Rules: Read This Before Posting


Topic: Speed Distribution Question?  (Read 2729 times)

0 Members and 1 Guest are viewing this topic.

Offline vcolts18

  • Very New Member
  • *
  • Posts: 1
  • Mole Snacks: +0/-0
Speed Distribution Question?
« on: October 12, 2009, 10:48:15 PM »
I am struggling with a chemistry problem about the gaseous state.

What is the probability that an O2 molecule in a sample of oxygen at 300 K has a speed between 5.00 x 10^2 and 5.10 x 10^2 m s^-1 (hint: try approximating the area under the Maxwell-Boltzmann distribution by small rectangles.

So basically does this mean it wants you to draw out the Maxboltz distribution for an ideal gas because the temp is so high? And then do some kind of reimann sum? I really don't even know where to start.

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27894
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Speed Distribution Question?
« Reply #1 on: October 13, 2009, 03:23:07 AM »
Probablity that x is in some interval equals integral on this interval. What they suggest is to not calculate the integral, but to approximate it by field of the reactangle. Approximation with http://en.wikipedia.org/wiki/Trapezoidal_rule will be even better.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links