Dalton's Law

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available from Wikipedia or other free sources online. In chemistry and
physics, Dalton's law (also called Dalton's law of partial pressures)
states that the total pressure exerted by a gaseous mixture is equal to
the sum of the partial pressures of each individual component in a gas
mixture. This empirical law was observed by John Dalton in 1801 and is
related to the ideal gas laws.Mathematically, the pressure of a mixture
of gases can be defined as the summation