Physical chemistry Calculators

Diffusion Coefficient Calculator Ten times the distance takes a hundred times the time, which is why anything big needs a pump. Graham's Law of Diffusion Calculator Hydrogen is sixteen times lighter than oxygen and only four times faster, because it is the square root that counts. Half-Life Calculator Two half-lives is a quarter left, not nothing — and ten leaves under a thousandth. Langmuir Isotherm Calculator Half coverage sits at exactly one over K, which is how the constant is read off an experiment. Osmotic Pressure Calculator A tenth-molar solution pushes nearly five atmospheres — which is why osmosis dominates biology and temperature effects do not. Partial Pressure Calculator Dalton's law — each gas exerts the pressure it would if the others were not there. Radioactive Decay Calculator Decay is memoryless — an atom that has survived nine half-lives is no likelier to go than a fresh one. Young-Laplace Equation Calculator Connect a small bubble to a large one and the small one empties — the intuition is exactly backwards.