Hi guys, quick question. I need to find the diffusivity of a species through a sphere (assume the species is concentrated at the center and diffuses outwards in 3D). Im assuming steady-state, so I'm using Fick's First Law, which for 3D scenarios is: J = -D [Del/Nabla Operator]C. First question is, would the equation then be: J = -D[(dC/dx)+(dC/dy)+(dC/dz)]? And if so, how would I go around solving this for J? In this equation, I am accounting for the diffusion in three directions (x,y,z) but the way I see it, they will all be the same (since its a sphere, r is the same for all). Am I correct?

Hey! We 've verified this expert answer for you, click below to unlock the details :)

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

Looking for something else?

Not the answer you are looking for? Search for more explanations.