| law of partial pressures 
 
 (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
 • Syn:
 Dalton's law, Dalton's law of partial pressures
 • Topics:
 chemistry, chemical science, physics, natural philosophy
 • Hypernyms:
 law, law of nature
 
 
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