What unit is commonly used to measure pressure in gases?

The unit most commonly used to measure pressure in gases is the Pascal (Pa). Pressure is defined as force per unit area, and the Pascal specifically represents one newton of force applied over an area of one square meter. This measurement is standard in the International System of Units (SI) and is used universally in scientific contexts to quantify pressure.

In the context of gases, pressure plays a crucial role in understanding gas behavior and properties, particularly under varying temperature and volume conditions as described by gas laws such as Boyle's Law and the Ideal Gas Law. The use of Pascals allows precise and consistent communication of pressure measurements across scientific disciplines.

Other units of pressure do exist, like atmospheres (atm) and torr, but the Pascal remains the SI unit, providing a standardized measure that is essential for scientific rigor and comparison.