Entropy and Heat Capacity

Heat Capacity , Entropy , and Free Energy of Rubber Hydrocarbon

Measurements of heat capacity were made on rubber hydrocarbon in its different forms from 14 to 320° K with an adiabatic vacuum-type calorimeter. At 14° K the heat capacity was found to be 0.064 j/g/"C for both the metastable amorphous and the crystalline forms. With increase in temperature, the heat capacity increases gradually up to a transition at about 199° K, the amorphous form having a li...

Lost heat capacity and entropy in the helical magnet MnSi.

The heat capacity of MnSi at B = 0 and B = 4 T was measured in the temperature range 2.5-100 K. To analyze the data, calculations of the phonon spectrum and phonon density of states in MnSi were performed. The calculated phonon frequencies were confirmed by means of inelastic neutron scattering. The analysis of the data suggests the existence of negative contributions to the heat capacity and e...

QSPR Modeling of Heat Capacity, Thermal Energy and Entropy of Aliphatic Aldehydes by using Topological Indices and MLR Method

Heat Transfer and Entropy

Partial Molar Entropy and Partial Molar Heat Capacity of Electrons in Metals and Superconductors

There are at least two valid approaches to the thermodynamics of electrons in metals. One takes a microscopic view, based on models of electrons in metals and superconductor and uses statistical mechanics to calculate the total thermodynamic functions for the model-based system. Another uses partial molar quantities, which is a rigorous thermodynamic method to analyze systems with components th...