Dalton's law
noun
1 Dalton's law
chemistry Law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation.
synonym: law of multiple proportions.
2 Dalton's law
chemistry and physics Law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature.
synonyms: Dalton's law of partial pressures, law of partial pressures.
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