PV = nRT

The equation \( PV = nRT \) is a fundamental formula in chemistry that describes the behavior of an ideal gas. In this context, \( P \) represents pressure, \( V \) is volume, \( n \) stands for the number of moles of gas, \( R \) is the ideal gas constant, and \( T \) is temperature in Kelvin. Essentially, it shows how these four variables are related: if you change one, at least one of the others will also change to maintain the relationship, which helps us understand how gases behave under different conditions.