Liquid Collision Rate: Estimating Molecular Flux

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In kinetic theory, liquids are treated as incompressible substances with freely moving atoms. The discussion focuses on deriving an expression for molecular flux, defined as the rate of collisions per unit area with a surface, rather than between individual molecules. To estimate this flux, one must calculate the area swept by molecules in the liquid over time. The inquiry suggests that methodologies used for gases might be applicable, referencing a specific section in a lecture on gas properties for potential guidance. Understanding these principles is essential for accurately estimating molecular collision rates in liquids.
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In kinetic theory a liquid is viewed as an incompressible substance in which the atoms are free to move. I would like to know how to find an expression for the molecular flux in a liquid. By molecular flux I mean the collisions per unit area, where collision refers not to the collision between individual molecules but to the collision with a general surface.
I hope that was understandable, but just to make sure I will elaborate. I want to find the rate at which a molecule hits a cluster of n molecules of area A, so to do that I will somehow need to estimate what area is swept over by the molecules in the liquid per unit time.
 
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