Vikas TU
Last Activity: 5 Years ago
Dear student
Temperature of the helium atom, T He = –20°C = 253 K
Atomic mass of argon, M Ar = 39.9 u
Atomic mass of helium, M He = 4.0 u
Let, ( v rms ) Ar be the rms speed of argon.
Let ( v rms ) He be the rms speed of helium.
The rms speed of argon is given by:
(V rms )Ar = sqrt (3RTar/ Mar)
(V rms )He = sqrt (3RTHe/ M He )
Equating two equal
Tar = T He /M He * Mar
=> 253/4 * 39.9
=> 2.52 *10^3 K