Final answer:
Volume is inversely proportional to pressure and directly proportional to absolute temperature as described by the Ideal Gas Law PV = nRT.
Step-by-step explanation:
The Ideal Gas Law is a fundamental equation in chemistry that relates the pressure (P), volume (V), moles (n), and absolute temperature (T) of an ideal gas. According to the law, volume is inversely proportional to pressure and directly proportional to absolute temperature. This relationship can be seen in the equation PV = nRT, where R is the ideal gas constant. When the temperature is held constant, as the volume increases, the pressure decreases, displaying an inverse relationship (Boyle's law). Conversely, when the pressure is held constant, as the temperature increases, the volume increases as well, which is a direct relationship (Charles's law).
Avogadro's Law further supports these relationships by showing that volume or pressure is directly proportional to the number of moles of gas, given constant temperature and pressure.