Which of the following statements about gases is true?
- Heavier gas particles effuse faster than lighter gas particles.
- Particles of different masses have the same average speed at a given temperature.
- The higher the temperature, the lower the average kinetic energy of a gas sample.
- At very high pressures, a gas will occupy a larger volume than predicted by the ideal gas law.
- Particles of lighter masses have a lower average speed then particles of a higher mass at a given temperature