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the pressure exerted by a mixture of nonreacting gases is equal to the sum of the partial pressures of the separate components; it holds true only at very low pressures.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
[John Dalton, Brit. chemist, 1766–1844]
A law that states that, in a mixture of gases, the total pressure is equal to the sum of the partial pressures of each gas.
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