Volume-temperature relationships of some rare-earth chloride solutions
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Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.
For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.
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Abstract
A dilatometric apparatus was constructed which was capable of measuring the change in density of a liquid or solution with an accuracy of about two parts per million over the temperature range of 20 to 80°C. The variations of the volumes of the dilatometers with temperature were determined using mercury as a standard. Densities of water and aqueous lanthanum chloride and neodymium chloride solutions were determined at five degree temperature intervals from 20 to 80°C. Twelve lanthanum chloride solutions ranging in concentration from 0. 06362 to 3. 3907 molal and eleven neodymium chloride solutions ranging in concentration from 0. 1050 to 3. 4160 molal were investigated.