A Capella Science
Entropic Time (Billy Joel Parody)
Time runs backward in this exploration of why time runs forward, to the tune of Billy Joel's "For The Longest Time"
Professor Dave Explains
Free Energy of Dissolution
We've learned a lot about solution chemistry, and we've also learned about thermodynamics and spontaneity. So what about the spontaneity associated with dissolution? If an ionic solid dissolves in water, is this an enthalpically or...
Curated Video
VAV Variable Air Volume
Variable air volume hvac system basics. In this video we look at the basics of VAV ventilation system covering vav variable air volume systems used in hvac ventilation design, vav terminals, ahu air handling units, fan assisted vav...
Curated Video
How Thermocouples Work
Thermocouples, learn how thermocouples work in this video. We'll cover types of thermocouples, applications of thermocouples, the physics behind thermocouples as well as experiments to show how it works.
Curated Video
Supermarket HVAC Basics Explained
HVAC systems used in supermarkets & food retailers. In this video we look at different HVACR systems used in supermarkets & food retail outlets to understand the basics of how they work.
Curated Video
Constant Air Volume - CAV
Constant air volume hvac system basics. In this video we look at the basics of CAV ventilation system covering cav constant air volume systems used in hvac ventilation design, cav terminals, ahu air handling units, heat exchangers,...
Professor Dave Explains
IIT/JEE Chemistry Practice #30: Spontaneity
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #27: Resonance Energy
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Catalyst University
Isobaric Expansion Coefficient and Isothermal Compressibility
Isobaric Expansion Coefficient and Isothermal Compressibility
Professor Dave Explains
Practice Problem: Energy Diagrams
For this one we need to understand what the different parameters on an energy diagram correspond to. Check out my tutorial on this subject in the general chemistry playlist if it seems fuzzy!
Professor Dave Explains
IIT/JEE Chemistry Practice #29: Thermodynamics
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #25: Enthalpy of Formation
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Practice Problem: Hess's Law
If we want to find out some information regarding the enthalpy change of a reaction, but we don't want to perform the reaction, we can use Hess's law, which allows us to manipulate thermochemical data for related reactions. Let's...
Professor Dave Explains
Practice Problem: Free Energy and Nonstandard Conditions
We know that a lot of thermodynamic data is collected under standard conditions, but sometimes we will want to assess the free energy change associated with a process that is not occurring under standard conditions. Any other conditions...
Professor Dave Explains
The Third Law of Thermodynamics: Absolute Zero
Brr, it's so cold today! Could it get any colder? Is there a coldest possible temperature? Yes, there is! That seems strange, but now we know that temperature is just a measure of kinetic energy, so zero kinetic energy must mean zero...
Physics Girl
5 Awesome Science Party Tricks!
Check back next week for an explanation of these 5 physics party tricks!
Professor Dave Explains
Practice Problem: Calculating Free Energy Change
We know that the free energy change associated with a process will tell us whether it is spontaneous or not. And we also know that this depends on the change in enthalpy and the change in entropy for that process, as well as the...
Curated Video
Can We Really Build Cars That Run Only On Water?
While it is certainly enticing when a company or individual claims that they have developed technology that can power cars purely on the water when it comes to science, there is a fundamental restriction to this very idea. Simply put,...
Catalyst University
General Chemistry | Heat Capacity (q=smΔT) [Example 2]
Here, we perform a sample calculation for heat capacity in which we solve for a temperature (T) using q=smΔT.