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- Effusion is the process by which gas particles pass through a tiny opening from a region of high pressure to one of lower pressure.
library.fiveable.me › key-terms › ap-chemEffusion - Vocab, Definition, and Must Know Facts | Fiveable
In medical terminology, an effusion refers to accumulation of fluid in an anatomic space, usually without loculation. Specific examples include subdural, mastoid, pericardial and pleural effusions.
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Aug 5, 2019 · When a volume of gas is released from one smaller area to another larger area with less pressure, the gas either diffuses or effuses into the container. The primary difference between diffusion and effusion is the barrier, which filters the gas as it moves between the two volumes.
Jun 13, 2023 · Effusion. Effusion is the movement of a gas through a tiny hole into a vacuum. We want to know the rate of effusion, which is how much gas moves through the hole per unit time. We assume that the gas particles don't bump into each other while they move through the hole (this means it's a narrow hole in a thin wall).
In contrast, effusion is the escape of a gas from a container through a tiny opening into an evacuated space. The rate of effusion of a gas is inversely proportional to the square root of its molar mass ( Graham’s law ), a relationship that closely approximates the rate of diffusion.
Effusion is the movement of gas molecules from one container to another through a tiny hole. Rates of effusion can be compared at the same temperature using Graham’s law. Diffusion is the movement of gas molecules through one or more other types of gas via random molecular motion.
- Jessie A. Key
- 2014
Define and explain effusion and diffusion; State Graham’s law and use it to compute relevant gas properties
We can define effusion as a process by which a gas escapes through a small hole in its container into an evacuated space. Graham’s Law of Effusion states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
