The van der Waals equation is valid for $......$.

In the van der Waals equation for real gases,which of the following terms represents the correction for intermolecular forces?

What is the actual volume occupied by molecules in $1 \text{ mole}$ of water vapor at $STP$?

The $Van \text{ der } Waals$ equation explains the behaviour of

Consider the following gases and their corresponding $ 'a'$ values given in parentheses: $CH_4 (2.25), N_2 (1.35), O_2 (1.36)$,and $CO (1.46)$. Which of these gases will be the most difficult to liquefy?

The temperature at which a real gas obeys ideal gas laws over an appreciable range of pressure is called ..........