Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) At a given temperature,lighter gas particles travel more slowly than heavier gas particles.
B) The smaller a gas particle,the slower it will effuse
C) The higher the temperature,the lower the average kinetic energy of the sample.
D) At low temperatures,intermolecular forces become important and the pressure of a gas will be lower than predicted by the ideal gas law.
E) None of the above statements are true.