Longitudinal Waves. To see a animations of spherical longitudinal waves check out: In a longitudinal wave the particle displacement is parallel to the direction of wave propagation. The animation at right shows a one-dimensional longitudinal plane wave propagating down a tube.
The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
Decreasing the volume for an ideal gas at constant temperature and mol always increases the pressure of the gas in the container. However, in this case the pressure exerted when the volume is 4.84 L is exactly equal to the equilibrium vapor pressure of liquid CS2. Any volume decrease will cause the pressure of the vapor to increase. But since the pressure can not exceed the equilibrium vapor pressure decreasing the volume will cause condensation of the vapor to occur. Decreasing the