If the volume of a confined gas is constant then the absolute pressure is directly proportional to the absolute temperature according to:

The relationship between the absolute pressure of a confined gas and its absolute temperature at constant volume is defined by Gay-Lussac's Law, which is commonly associated with Charles' Law in certain contexts. Charles' Law states that when the volume of a gas is held constant, its pressure is directly proportional to its absolute temperature. This means that as the temperature increases, the pressure also increases, assuming that the volume remains unchanged.

In other words, if one were to heat the gas, the molecules would move faster, resulting in more frequent collisions with the walls of the container, which leads to an increase in pressure. This principle is foundational in thermodynamics and critical for understanding gas behaviors in confined spaces, such as in boilers or any pressurized system.

The other laws mentioned pertain to different aspects of fluid dynamics and gas behavior. Boyle's Law describes the relationship between pressure and volume at constant temperature, while Bernoulli's Law relates to fluid flow dynamics. Pascal's Theory deals with pressure transmission in fluids, and the General Gas Law combines various gas laws but does not specify conditions like constant volume in the same way that Charles' Law does.