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Fick’s First Law
Fick’s first law is described in the Matter glossary Fick's first law of diffusion . D, the diffusivity of oxygen in water has a value of 10-9 m2 s−1 at 298 K, δc is the difference in oxygen concentration between the bulk and at the surface. δx is the distance between the surface and the point at which oxygen is found in the bulk concentration – the diffusion layer thickness.
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