Containing the very latest information on all aspects of the properties of enthalpy and internal energy as related to liquids and vapours, either pure or mixed, this book brings all the information into one place providing the possibility of synergistic developments in the broader field of applied chemical thermodynamics. Written by acknowledged experts in their respective fields, the chapters cover theory, experimental methods and techniques and results for all types of liquids and vapours. These properties are important in all branches of pure and applied thermodynamics and this book, combining essentially all related areas, is an important contribution to the subject. Aimed at providing a key point of reference for graduates, researchers and anyone working in this field and in related areas, it will a valuable addition to the literature in the area.