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3. Equation of state for seawater
A physico-chemical system in equilibrium can be described by an unlimited number of properties: temperature, pressure, density, viscosity, dielectric constant, refractive index, etc. However, this information is redundant, as the system is completely described by a limited number of independent variables. However, this information is redundant, as the system is completely described by a limited number of independent variables. This number, or variance
, is fixed by the phase rule:
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Equation of state for seawater
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