Which of the following gas systems exhibits the most ideal behavior? one mole of He (g) at 100K in a 100 liter container one mole of He (g) at 100K in a 10 liter container one mole of He (g) at 400K in a 10 liter container one mole of He (g) at 400K in a 100 liter container

The ideal gas law assumes that the volume of the gas particles themselves is negligible compared to the volume of the container. Therefore, the gas system that exhibits the most ideal behavior would be the one with the smallest volume of gas particles relative to the volume of the container.<br /><br />In this case, the gas system with one mole of He (g) at 100K in a 100 liter container would exhibit the most ideal behavior. This is because the volume of the gas particles is negligible compared to the volume of the container, which is 100 liters. The other gas systems have smaller volumes of gas particles relative to the volume of the container, which would cause deviations from ideal behavior.<br /><br />Therefore, the correct answer is: one mole of He (g) at 100K in a 100 liter container.