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  • At 600 K, the Root Mean square [rms] speed ot Gas X [ Molar Mass =40 ] is equal to Most Probable speed of y at 90 K. The Molar mass of gas y ---is <img alt="\mathrm{gmol}^{-1},"

At 600 K, the Root Mean square [rms] speed ot Gas X [ Molar Mass =40 ] is equal to Most Probable speed of y at 90 K. The Molar mass of gas y ---is \mathrm{gmol}^{-1},?

Option: 1

4


Option: 2

6


Option: 3

8


Option: 4

10


Answers (1)

\mathrm{\begin{aligned} & V_{\ rM S}=\sqrt{\frac{3 R T}{M}} \\ & V_{M P}=\sqrt{\frac{2 R T}{M}} \end{aligned}}

\mathrm{\frac{V r m s \ {x}}{V M p Y}=\sqrt{\frac{3 T_x M y}{2 T_y M x}}}

\mathrm{\begin{aligned} & 1=\sqrt{\frac{3 \times 600 \times M y}{2 \times 90 \times 40}}=\sqrt{\frac{M y}{y}} \\ & M Y=4 \ \mathrm{g} \mathrm{Mol}^{-1} \end{aligned}}

Posted by

Sumit Saini

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