(Solved): Problem 6 Situation: Diffusion of water vapor in a narrow tube is occurring as in the previous pro ...

Problem 6 Situation: Diffusion of water vapor in a narrow tube is occurring as in the previous problem under the same conditions. However, as shown in the Figure at right, at a given time \( t \), the level is \( z \) from the top. As diffusion proceeds, the level drops slowly. Requirements: Derive the equation for the time \( t_{F} \) for the level to drop from a starting point of \( z_{0} \) at \( t=0 \) to \( z_{F} \) at \( t=t_{F} \)