Easy
An ideal gas of molar mass $M_0$ has r.m.s. velocity $V$ at temperature $T$. Then
- A$VT^2 = \text{constant}$
- B$\frac{V^2}{T} = \text{constant}$
- C$V^2 T = \text{constant}$
- D$V$ is independent of $T$
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