At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at `-20 ^(@)C` ? (atomic mass of Ar = 39.9 u, of He = 4.0 u).

At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the r.m.s. speed of a helium gas atom at -20^(@) C ? (Atomic mass of Ar = 39.9 u, of He = 4.0 u).

At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the r.m.s. speed of a helium gas atom at -20^(@) C ? (Atomic mass of Ar = 39.9 u, of He = 4.0 u).

At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the r.m.s. speed of a helium gas atom at -20^(@) C ? (Atomic mass of Ar = 39.9 u, of He = 4.0 u).

At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rmsspeed of a helium gas atom at -20 ^@C ? (atomic mass of Ar = 39.9 u, of He = 4.0 u).

At what temperature is the root mean square speed of a an atom is an argon gas cylinder equal to the rms speed of helium gas at - 20^(@)C ? (atomic mass of Ar = 39.9 u and of He = 4.0u)

At what temperature is the rms speed of an atom in an argon gas cylinder is equal to the rms speed of helium gas atom at - 20^(@)C ? ( atomic mass of Ar = 39.9, of He = 4.0 )

At what temperature is the rms Speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at -20^(@)C ? [Atomic mass of Ar = 39.90, He = 4.04]

At what temperature is the root-mean-square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at -20^(@)C ? The atomic masses of argon and helium are 39.9 a.m.u. and 4.0 a.m.u, respectively.

At what temperature is the rms speed of an atom in a nitrogen gas cylinder equals to the rms speed of an oxygen gas atom at 23^(@)C . Atomic mass of nitrogen is 14 and that of oxygen is 16.