Khan Academy: Molarity, Molality, Osmolarity, Osmolality, and Tonicity

See how each of these terms (molarity, molality, osmolarity, osmolality, tonicity) tells us something different about a solution in the Khan Academy video. [4:03]

See how each of these terms tells us something different about a solution.

Molarity and osmolarity are two distinct concepts. Molarity (M) is the number of moles of solute per liter of solution. The unit of molarity is the mole (mol). Osmolarity (Osm/L) is the total concentration of all solutes in the solution....

Learn the definitions of a solution, solute, and solvent. Understand how molarity is used to quantify the concentration of solute, and comcalculations related to molarity.

Learn about osmoles and figure out how to calculate osmolarity really easily with this video lecture. Video describes how these calculations are used in a medical lab setting. [11:32]

A video introducing the two different processes of metabolism: catabolism and anabolism. Video gives lots of example to explain that catabolism is a process of breaking down and anabolism rebuilds matter. [10:06]

A video investigating cofactors and its role in helping enzymes catalyze a reaction. Learn that organic cofactors are known as coenzymes and inorganic as cofactors and video will discuss the differences between the cofactor and coenzyme....

Learn that macrostates properties include macroscopic properties such as: pressure, temperature, and volume while microstates includes microscopic properties like: kinetic energy, force, and velocity with this video. Video will also...

Video tutorial investigates how to plot projectile displacement, acceleration, and velocity as a function to change in time. [16:17]

Learn about Thomson's cathode ray experiment and the plum pudding model and Rutherford's gold foil experiment.