Physical Chemistry

Collection by Eric Tobias

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Eric Tobias
The First Law of Thermodynamics and Some Simple Processes

15.2 The First Law of Thermodynamics and Some Simple Processes - College Physics | OpenStax

Describe the processes of a simple heat engine. Explain the differences among the simple thermodynamic processes—isobaric, isochoric, isothermal, a

Schrodinger's cat helped illustrate a seemingly paradoxical reading of Heisenberg's uncertainty principle. A cat is hidden in a box. A random process either kills the cat or doesn't. Until an observer opens the box to look, the cat is both alive and dead.

Quantum Physics Pictures

Quantum physics is a term that's interchangeable with "quantum mechanics." It deals with matter and energy at the smallest scale available: the atomic and subatomic realms. Take a look at these quantum physics pictures.

First Law of Thermodynamics

First Law of Thermodynamics

First Law of Thermodynamics states that energy in the universe is the neither created nor destroyed, thus the energy of the universe is a constant.

Gibbs Free Energy (really good fuel cell notes)

Gibbs (Free) Energy

Gibbs free energy, denoted G , combines enthalpy and entropy into a single value. The change in free energy, ΔG , is equal to the sum of the enthalpy plus the product of the temperature and entropy of the system. ΔG can predict the direction of the chemical reaction under two conditions: constant temperature and constant pressure.

Thermodynamic Potentials (equations)

Thermodynamic Potentials

Thermodynamic Potentials Thermodynamic potentials are used to measure the energy of a system in terms of different variables because often we can only measure certain properties of the system. For example we might know the pressure and temperature of system but not the volume or the entropy. Thermodynamic potentials allow us to measure more state variables of the system. The thermodynamics potentials are the internal energy,enthalpy, Gibbs Free Energy and the Helmholtz Free Energy. These…

TJ. Thermodynamics: Free Energy Home Table of Contents Thermodynamics Gateway Page In this module:

TJ. Thermodynamics: Free Energy Home Table of Contents Thermodynamics Gateway Page In this module: