Chemistry - Ideal Gas Question with Solution | TestHub

Root mean square speed of an unknown gas at $727^{\circ }\mathrm{C}$ is $10^5\mathrm{cm}/$ second. Calculate molar mass of unknown gas (in gram/mole) $[$ Take $\mathrm{R}=\frac{25}{3}\mathrm{J}/$ mole-K $]$.