The Ideal Gas Law is a fundamental equation in chemistry and physics that describes the behavior of ideal gases. It combines four key variables: pressure (P), volume (V), temperature (T), and the number of moles of gas (n). The law is expressed as PV = nRT, where R is the ideal gas constant. This equation helps predict how gases will respond to changes in these variables. In an ideal gas, it is assumed that the gas particles do not interact with each other and occupy no volume. While real gases may deviate from this behavior under certain conditions, the Ideal Gas Law provides a useful approximation for many gases at standard temperature and pressure.