A flask has 10 gas particles out of which four particles are moving at 7 ms − 1 and the remaining are moving at the same speed of ' X ′ ms − 1 . If the r.m.s. of the gas is 5 ms − 1 , what is the

Question

A flask has 10 gas particles out of which four particles are moving at 7 ms − 1 and the remaining are moving at the same speed of ' X ′ ms − 1 . If the r.m.s. of the gas is 5 ms − 1 , what is the value of X ?

TestHub · Accepted Answer

Using U r m s ​ = N ∑ v 2 ​ ​ : 5 = 10 4 ( 7 2 ) + 6 X 2 ​ ​ ⇒ 25 = 10 196 + 6 X 2 ​ ⇒ X = 3 m s − 1

Chemistry - Ideal Gas Question with Solution | TestHub

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