posted by .

Consider the following: CH4, SiH3Cl, Ar, and CH2F2.
(a) Which one will diffuse the fastest?
(b) What is the rms speed (m/s) of the slowest-moving atom or molecule at 25°C?

  • Chemistry -

    The fastest diffuser is the loest molar mass substance.

    urms = sqrt(3RT/M)
    M is molar mass. R is 8.314. T in kelvin.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. ap chemistry

    Discuss briefly the relationship between the dipole moment of a molecule and the polar character of the bonds within it. WIth this as a basis, account for the difference between the dipole moments of CH2F2 and CF4. does anyone have …
  2. physics

    a car is travelling along a cruve having radius of curvature of 80.0 m, banked at an angle of theta=30. The coeff of static friction of ice is 0.05. What is: a) the slowest speed the car can negotiate the banked curve with?
  3. chemistry

    36 colored paper clips (12 each of 3 different colors) 1.Each paper clip represents a single atom. Designate a different color of paper clip to represent atoms of oxygen (O), hydrogen (H), and carbon (C). Makes two molecules each of …
  4. Intro. Chemistry

    Based on the law of definite composition, Dalton proposed that one atom of carbon combines with two atoms of oxygen to always produce CO2. Similarly,he proposed that two atoms of hydrogen combine with one atom of oxygen to give a molecule …
  5. chemistry

    imagine replacing one H atom of a methane molecule, ch4, with another atom or group of atoms. Account for the order in the normal boiling points of the resulting compounds:CH4(-161 celsius); CH3Br(3.59 celsius); CH3F(-78 CELSIUS); …
  6. Chemistry

    Consider three gases: chlorine, freon-12, and radon. According to Grahams law of diffusion which gas would you expect to diffuse the fastest through a room?
  7. chemistry

    Consider the following entities: Ar, SiH3F, Xe and CClF3. which one will diffuse the fastest?
  8. Physics Inertia!

    Rank from fastest to slowest. a)a solid ball rolling down a ramp without slipping b)a cylinder rolling down the same ramp without slipping. c)a block sliding down a firctionless ramp with the same height and slope. Select all that …
  9. Check my CALCULUS answers please!

    Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest?
  10. Physics

    Vertical beam of mercury (Hg atomic mass =202u) atoms emerges from the oven kept at T= 400K. Consider three atoms, emerging from the oven: one with the average speed, one with the rms speed, and the other with the most probable speed …

More Similar Questions