Quantum Mechanics with Dr. Bryan C. Sanctuary

Archive for the ‘MCH Products’ Category

In this clip the Aufbau Principle of the electronic structure of the elements is shown as an example of the content of MCH multimedia’s General Chemistry tutorials.  The Aufbau or building up principle makes use of the Hydrogen Orbitals and the Pauli Principle. 

In this video one of the many uses of plotting in the ebooks is given.  The example is first order consecutive reactions where the rate equations for the the concentration changes are plotted.  By varying the rate constants so that the first is ten times smaller than the second, the steady state approximation is explained.

In this video step-a by-step description is given of a bomb calorimeter that is used to measure the internal energy of a sample.  If you burn as sample completely and measure the heat that evolves, you can find the thermodynamic internal energy.  Recall that internal energy is a state function and does not depend upon how the sample is burned.  Therefore if you burn a sample in a bomb calorimeter, say some cookies, the energy you measure is the same as released when you eat the cookie.