Discover the Distance 2 Gases Meet | Urgent Help Needed!

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The discussion centers on calculating the meeting point of HBr and NH3 gases in a 1.80 m tube. Using the kinetic theory of gases, the mean velocity of each gas, which is inversely proportional to its molecular mass, determines the distance each gas travels before they meet. The gases will form solid NH4Br at the meeting point, which can be calculated by applying the formula for diffusion distance based on their respective velocities.

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Urgent Help Needed! (gases)

I need some urgent help with figuring out how to find the distance which 2 gases will meet in this question..

Given: Samples of HBr gas and NH_3 gas are placed at opposite ends of a 1.80 m tube.
Question: If the two gases are allowed to diffuse through the tube toward one another, at what distance from each end of the tube will the gases meet and form solid NH_4Br?

Thank you to anyone who can help me with this, or at least set me in the right path.


The distance must be in Cm as well..
 
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One may assume that the gases are at the same temperature.

Apply kinetic theory of gases and determine the mean velocity which is a function of molecular mass.

If one gases travels distance d in time T, then the other must travel 1.8m-d in the same time.
 

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