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A certain gas takes three times as long to effuse out as helium.

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A certain gas takes three times as long to effuse out as helium. Its molecular mass will be

(a) 27 u 

(b) 36 u 

(c) 64 u 

(d) 9 u

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1 Answer

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Best answer

The correct option is : (b) 36 u 

Explanation:

According to Graham's law of diffusion

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