Final answer:
The van der Waals equation takes into account the finite molecular volume and non-zero molecular attractions of real gases.
Step-by-step explanation:
The van der Waals equation takes into account the finite molecular volume and non-zero molecular attractions of real gases in order to describe their behavior more accurately. In an ideal gas, the volume of the gas molecules and the attractive forces between them are ignored. However, in real gases, these factors become significant at lower temperatures and higher pressures, requiring corrections to be made in the van der Waals equation.