One law governing this process sets the flux proportional to a certain spatial derivative and is named after Adolph Fick. For a gas, the rate of this process is proportional to the square root of molar mass by Graham's Law. When water undergoes this 
One law governing this process sets the flux proportional to a certain spatial derivative and is named after Adolph Fick. For a gas, the rate of this process is proportional to the square root of molar mass by Graham's Law. When water undergoes this process by moving across a semipermeable (SEM-"eye"-PER-mee-uh-bull) membrane, it is called osmosis. For 10 points, name this process in which a compound moves from an area of high concentration to an area of low concentration.
One law governing this process sets the flux proportional to a certain spatial derivative and is named after Adolph Fick.
{diffusion} [or {effusion} before "{osmosis}"]