[Answer] What is the formula for diffusion rate?

Answer: Rate(mm/h) = (diameter[mm]/time[min] X60

Most relevant text from all around the web:

What is the formula for diffusion rate? How to Calculate Diffusion Rate | Sciencing Graham's Law of Diffusion and Effusion - ThoughtCo How to Calculate Interest Rate: 10 Steps (with Pictures ... Four Things That Affect Rate of Diffusion Four Things That Affect Rate of Diffusion | Sciencing Mon Dec 09 2019 · r (M)½ = constant . In these equations r = rate of diffusion or effusion and M = molar mass . Generally this law is used to compare the difference in diffusion and effusion rates between gases often denoted as Gas A and Gas B. It assumes that temperature and pressure are constant and equivalent between the two gases. Using Graham's law of diffusion: ( Rate 1 /Rate 2 ) = ( Mass 2 /Mass 1) 1/2 (RateF 2 /RateCl 2) = (70.9 g/ 32g ) 1/2 = 1.49. Fluorine gas is 1.49 times as fast as chlorine gas. 2. First law of Diffusion. In the modern mathematical form the Fick’s first law of diffusion is: \( N_{i} = -D_{i} ∇ c_{i}\) Here for species \( i N _{i}\) is the molar flux (mol \(m^{-2} s^{-1 }\)) \(D_{i}\) is the diffusion coefficient ( \(m^{-2} s^{-1}\)) and \(c_{i}\) is the concentration (\(mol m^{-3}\)). See this law in equation form below. r ∝ 1/ (M)½ . or. r (M)½ = constant . In these equations r = rate of diffusion or effusion and M = molar mass . where (D) refers to the diffusion coefficient and (dC/dx) is the gradient (and is a derivative in calculus). While Fick’s First Law of Diffusion describes how much flux there is it is in fact Fick’s Second Law of Diffusion that further describes the rate of diffusion and it takes the form of a partial differential equation...

Disclaimer: 

Our tool is still learning and trying its best to find the correct answer to your question. Now its your turn, "The more we share The more we have". Comment any other details to improve the description, we will update answer while you visit us next time...Kindly check our comments section, Sometimes our tool may wrong but not our users.

Are We Wrong To Think We're Right? Then Give Right Answer Below As Comment