28. Which of the following statements about ideal gases and real gases are correct?
(A) The assumptions of the ideal-gas model include negligible molecular volume and the absence of intermolecular forces.
(B) The molar volume of an ideal gas is about 22.4 L/mol at standard temperature and pressure (STP), where STP corresponds to 1 atm and 25°C.
(C) For a fixed amount of gas in a rigid container, the pressure approximately doubles when the temperature increases from 100°C to 200°C.
(D) Neon behaves more ideally than ammonia under the same conditions.
(E) The lower the pressure and the lower the temperature, the more closely a real gas approaches ideal-gas behavior.