Question

the closeness of particles of gas and their low speeds allow intermolecular forces to become important at certain pressures and temperatures. which best describes this statement? this is a limitation of the kinetic - molecular theory. this is a postulate of the kinetic - molecular theory. this describes ideal gas behavior using the kinetic - molecular theory. this describes ideal gas behavior without the kinetic - molecular theory.

Explanation:

The kinetic - molecular theory assumes gas particles have no intermolecular forces and are in constant random motion with high speeds. When the closeness of gas particles and their low speeds make intermolecular forces important, it goes against the assumptions of the kinetic - molecular theory, thus it's a limitation.

Answer:

This is a limitation of the kinetic - molecular theory.