The ratio of the vapour densities of two gases at a given temperature – McqOptions

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1.	The ratio of the vapour densities of two gases at a given temperature is 9:8. The ratio of the rms velocities of their molecules is ___________
A.	3:2√2
B.	2√2:3
C.	9:8
D.	8:9
Answer» C. 9:8

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