Graham's

Graham's law describes how gases diffuse or spread out, stating that lighter gases move faster than heavier ones. Specifically, the rate at which a gas diffuses is inversely proportional to the square root of its molar mass. For example, a lighter gas like helium will diffuse faster than a heavier gas like oxygen. This principle helps chemists understand and predict how gases will behave in different situations, such as in the atmosphere or in laboratory experiments, based on their weights. It’s an important rule for studying the properties and movement of gases in science and industry.