Khan Academy
Heat of Formation, Thermodynamics, Chemistry
In this chemistry video, Sal takes a closer look at what happens to the change in enthalpy during a chemical reaction. He points out that, given constant pressure, the enthalpy change becomes the heat added to the system at that constant...
JFR Science
Hess' Law: Enthalpies of Formation
Tired of long, tedious enthalpy calculations? Look no further than Hess' Law! Young chemists discover a shortcut using changes in enthalpy with a video from JFR Science. The narrator talks about the theory behind the law, then performs...
Khan Academy
Khan Academy: Chemistry: Hess's Law Example
A video lecture showing a step by step procedure for solving a Hess's law problem from a textbook. The problem instructs students to find the enthalpy change using the heat of formation. [12:08]
Khan Academy
Khan Academy: Chemistry: Hess's Law and Reaction Enthalpy Change
A video lecture giving an explanation of Hess's law, the law of heat summation. Understand that whether the process takes places in one or several steps the heat released or absorbed in a chemical process is the same. The video also...
Khan Academy
Khan Academy: Chemistry
A video lecture that builds on previous knowledge of enthalpy to find out how much heat energy is either gained or lost in a reaction. By being able to predict how much heat it takes to produce certain products, it is explained to...