What is the flux density of salt in a horizontal tube, 10cm in length, connecting seawater (salinity 30g/L) to a tank of freshwater (salinity ~0) assuming no advection occurs?
J (g/m2s) = C (g/m3) x V (m/s)
The Attempt at a Solution
C = 30g/L * 1L/0.01m3 = 3000g/m3
The calculation is obviously really simple, but I'm not sure what to use for time when calculating velocity (m/s). I'm given the length 10cm, but I'm assuming time has something to do with the statement "assuming no advection occurs". I feel like I'm overlooking some basic assumption.