Kinetic Theory of the Ideal Gas

[liz_p88]

Homework Statement

Find the rms speed in air at 0.0°C and 1.00 atm of (a) the N2 molecules (b) the O2 molecules, and (c) the CO2 molecules.

Homework Equations

vrms = square root of 3kT/m

The Attempt at a Solution

(a). 28.0u x (1.66 x 10^-27) = 4.68 x 10^-26
1.5 x (1.38 x 10-23 J/K) x 273K = 5.6511 x 10^ -21

square root of {(3)(5.6511 x 10^-21)(273)/(4.648 x 10^-26)}

9978.73 m/s

If I got this correct, I can do b and c but I honestly don't know if I did it right

 

[liz_p88]

I did it again, this time I did

square root of (2)(5.6511 x 10^-21)/ (4.648 x 10^-26)

493 m/s