👉 Partial Pressure (ppm) is a unit used to express the concentration of a gas in a mixture relative to the total pressure of that mixture, assuming ideal gas behavior. It is calculated by multiplying the mole fraction of the gas by the total pressure of the system. For example, if a gas occupies 40% of the total pressure in a mixture of gases at 1000 kPa, the partial pressure of that gas is 400 kPa (0.40
1000 kPa). This concept is crucial in fields like environmental science, chemistry, and engineering for understanding gas behavior in various applications, such as air quality monitoring, industrial processes, and atmospheric studies.
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