Thermal Data. IV. The Heats of Combustion of Adenine, Hypoxanthine, Guanine, Xanthine, Uric Acid, Allantoin and Alloxan

1935 ◽  
Vol 57 (9) ◽  
pp. 1734-1740 ◽  
Author(s):  
Robert D. Stiehler ◽  
Hugh M. Huffman
Keyword(s):  
Uric Acid ◽  
Thermal Data ◽  
Heats Of Combustion

Thermal Data. VII. The Heats of Combustion of Seven Amino Acids

1937 ◽  
Vol 59 (11) ◽  
pp. 2144-2150 ◽  
Author(s):  
Hugh M. Huffman ◽  
Sidney W. Fox ◽  
Emory L. Ellis
Keyword(s):  
Amino Acids ◽  
Thermal Data ◽  
Heats Of Combustion

Heats of Combustion and Specific Heats of Buna-S Treated in Various Ways

1942 ◽  
Vol 15 (4) ◽  
pp. 874-878 ◽  
Author(s):  
W. A. Roth ◽  
Gerhilde Wirths ◽  
Hildegarde Berendt
Keyword(s):  
Specific Heats ◽  
Thermal Data ◽  
Heats Of Combustion

Abstract Measurements of the heats of combustion and specific heats (between 20° and 50° C) of crude untreated Buna-S, highly degraded Buna-S, and cyclized Buna-S are reported. The heats of combustion are then discussed. A well defined relation exists between thermal data and changes which take place in Buna-S. In the case of specific heats, the values of which are less precise, the relation is not so clearly defined.

scholarly journals The strengths of certain covalent metal bonds

1949 ◽  
Vol 241 (838) ◽  
pp. 587-617 ◽  
Keyword(s):  
Kinetic Studies ◽  
Heats Of Formation ◽  
Bond Energies ◽  
Melting Points ◽  
Bomb Calorimeter ◽  
Diethyl Zinc ◽  
Dissociation Energies ◽  
Thermal Data ◽  
Heats Of Combustion ◽  
Metal Bonds

A method has been evolved for measuring the heats of combustion of spontaneously inflammable substances in the bomb calorimeter and applied to the following compounds: zinc dimethyl, zinc diethyl, zinc di- n -propyl, zinc di- n -butyl, cadmium dimethyl, boron trimethyl and aluminium trimethyl. The samples used were subjected to very thorough purification, revised melting points being given for cadmium dimethyl and aluminium trimethyl. The heats of formation, deduced by the application of additional thermal data, have been listed with all those so far determined for the metal alkyls, and the energies of dissociation and bond energies of the metal-carbon links estimated. This has entailed a recalculation of the heats of sublimation of aluminium and tin. From a comparison of the values obtained for the dissociation energies with evidence from spectroscopic and kinetic studies, a definite necessity for taking into account the energies required to promote the various elements to the states of maximum valency is apparent.

Sign in / Sign up

Export Citation Format

Share Document