Question

at what temperature is the root mean square speed of oxygen atom equal to the r.m.s speed of helium gas atom at -10 c? atomic mass of oxygen=32 and that of helium=40​

Answer 1

Explanation:

Let 1 and 2 represent for Argon atom and Helium atom.

rms speed of Argon, vrms1=M13RT1

rms speed of Helium, vrms2=M23RT2

According to question,

vrms1=vrms2

∴M13RT1=M23RT2,M1T1=M2T2

or T1=M