What is the ideal gas law equation?

The ideal gas law equation is represented as PV = nRT, where P stands for pressure, V for volume, n for the number of moles of gas, R is the ideal gas constant, and T represents the temperature in Kelvin. This equation combines several simpler gas laws—the relationships between pressure, volume, temperature, and number of moles of a gas—into one comprehensive expression.

The ideal gas law is fundamental in chemistry because it allows for the prediction of the behavior of an ideal gas, which is a hypothetical gas that perfectly follows the laws of thermodynamics. The law provides a clear relationship among the four variables, making it possible to solve for one if the others are known. This equation is particularly useful in calculations involving gases under various conditions, such as in laboratory experiments or in understanding atmospheric processes.

In contrast to the other options, this formulation succinctly captures the essence of gas behavior without combining unrelated concepts. For example, the first option appears to present an incorrect format entirely, while the third option relates temperature and volume but does not reflect the complete relationship described by the ideal gas law. The fourth option seems to reference a mass-volume relationship, which is also not applicable to the ideal gas law. Therefore, the representation of the ideal gas