Contributions to the Data on Theoretical Metallurgy: [Part] 11. Entropies of Inorganic Substances: Revision (1948) of Data and Methods of Calculation Page: 98
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98 CONTRIBUTIONS TO DATA ON THEORETICAL METALLURGY
TABLES OF LOW-TEMPERATURE HEAT CAPACITIES, ENTROPIES,
AT 298.16 K.0, AND DATA CONCERNING CHANGES IN STATE
The following tables summarize the available low-temperature heat-
capacity data, and data concerning changes in state occurring in the
temperature range 00 to 298.160 K. for the elements and inorganic
Table 7 lists values of the heat capacities read from the smooth
curves used in calculating the third-law entropies. These values are
given for 100, 250, 500, 1000, 1500, 2000, and 298.160 K. Heat-
capacity figures for gases are those obtained by calculation from spec-
troscopically determined energy levels or molecular constants. Values
in parentheses are extrapolations below or above the temperature
range of the actual measurements. The asterisk (*) is used to denote
substances having "humps" in their heat-capacity curves in the range
00 to 298.160 K. The dagger marks substances undergoing one or
more changes in state-sharp transition, fusion, sublimation, and
vaporization. The letters c, 1, and g denote respectively the crystal-
line, liquid, and gaseous states, and the symbol aq., placed after
chemical formulas of ions and a few other substances, refers to hypo-
thetical, ideal solutions of 1 molal concentration. Table 7 also gives
the entropy values at 298.160 obtained by the methods indicated.
Table 8 gives values of the temperatures of changes in state, to-
gether with the accompanying heat absorptions in calories per mole.
This table includes all the substances marked by the dagger in table 7.
The data given are those selected previously in computing the third-
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Kelley, K. K. Contributions to the Data on Theoretical Metallurgy: [Part] 11. Entropies of Inorganic Substances: Revision (1948) of Data and Methods of Calculation, report, 1950; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc12637/m1/102/: accessed May 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.