This episode explains the Ideal Gas Law as a universal equation that combines all the individual gas laws. It introduces the equation's components—pressure (P), volume (V), moles (n), the universal gas constant (R), and absolute temperature (T) in Kelvin—and emphasize the importance of using the correct units for R. The episode outlines a systematic approach for solving problems and provides examples for calculating volume, pressure, temperature, and moles. It also demonstrates how to use the Ideal Gas Law to determine the molar mass of an unknown gas from its density.