Root mean square speed of gas molecules

2026 1 question

1. 1 Kinetic Theory Medium
   A flask contains argon and chlorine in the ratio of 2 : 1 by mass. The temperature of the mixture is $27^\circ C$. The ratio of root mean square speed of the molecules of the two gases $\left(\frac{v_{rms}^{Ar}}{v_{rms}^{Cl}}\right)$ is: (Atomic mass of argon = 40.0 u and molecular mass of chlorine = 70.0 u)
   A $\frac{\sqrt{7}}{2}$ B $\frac{7}{2}$ C $\frac{7}{4}$ D $\frac{2}{\sqrt{7}}$
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