Crash Course
Precipitation Reactions: Crash Course Chemistry
A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this...
Crash Course
Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry
We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In...
Crash Course
Stoichiometry: Chemistry for Massive Creatures - Crash Course Chemistry
Chemists need stoichiometry to make the scale of chemistry more understandable - Hank is here to explain why, and to teach us how to use it. Table of Contents Atomic Mass Units 2:24 Moles 5:12 Molar Mass 5:59 Equation Balancing 8:45...
Bozeman Science
Stoichiometry
In this video Paul Andersen explains how stoichiometry can be used to quantify differences in chemical reactions. The coefficients in a balanced chemical equation express the mole proportions in that reaction. These values can be used to...
Curated Video
Solving Limiting Reactant Practice Problems!
In this video we walkthrough 3 limiting reactant practice problems step by step and show you how to solve them!
Curated Video
How to find the Molecular Formula of a Chemical Compound
The molecular formula is the actual formula of a compound and can be found by comparing the mass of the molecular formula to the mass of the empirical formula to figure out how much bigger the molecular formula is compared to the...
Curated Video
How to Calculate Molarity | Chemistry Made Easy
Calculating molarity is as easy as plugging numbers into the triangle and using your calculator to either multiply or divide the numbers given in the problem. Calculating molarity is important in chemistry as molarity is a common...
Curated Video
Molarity
This video will explain the concept of a mole and how to calculate the molarity of a solution using concentration of solutions.
FuseSchool
How To Measure Loss Of Mass In A Reaction
In this video, we’re going to learn about the loss of mass in a chemical reaction, how it happens and why we measure this. The total MASS of reactants will be the same as that of the products, as mass is always conserved in a chemical...
Professor Dave Explains
Calculating the Formulas of Hydrated Salts
Some ionic compounds are coordinated to a specific number of water molecules in solution. But how many? How can we find out? We can't see molecules! Whatever will we do? Something very clever, as it turns out. Take a look!
FuseSchool
Measuring For The Loss Of Mass In A Reaction
In this video, we’re going to learn about the loss of mass in a chemical reaction, how it happens and why we measure this. The total MASS of reactants will be the same as that of the products, as mass is always conserved in a chemical...
Catalyst University
Enzyme Kinetics (Spectrophotometry and Calculations)
Enzyme Kinetics (Spectrophotometry and Calculations)
Catalyst University
General Chemistry | Ideal Gas Law (PV=nRT) [Example #2]
In this video, we will do a second example calculation using the ideal gas equation of state, PV=nRT. [Solving for pressure, P]
FuseSchool
What Is the Atom Economy?
Learn the basics about the 'Atom Economy' in this video in our Chemical Calculations Series.
FuseSchool
Calculating Masses In Reactions
Learn the basics about Calculating masses in reactions. What happens to the density of the mass when we include reactions? What reactions changes the mass? How do you measure it? Find out more in this video!
Professor Dave Explains
Limiting Regents and Percent Yield
Chemistry doesn't always work perfectly, silly. Molecules are left over when one thing runs out! Also we never get all of the products that we thought we might by doing the math. You gotta know about the limiting reagents and the percent...
Professor Dave Explains
IIT/JEE Chemistry Practice #6: Stoichiometry/Precipitation Reactions
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #22: Density of a Gas
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #3: Empirical/Molecular Formula
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #7: Molality/Mole Fraction
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #24: Molar Mass of a Gas
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #11: Moles/Molarity
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Elemental Analysis: Empirical and Molecular Formulas
There's a thing with carbon and hydrogen in it. But how many of each?! That's the kind of thing a chemist should know. So let's do some elemental analysis!
Professor Dave Explains
Practice Problem: Limiting Reagent and Percent Yield
Once we get the hang of stoichiometric calculations, we get a curve ball. Limiting reagents? Not all of the reactants will react? We might not get as much product as we expect? Let's practice identifying the limiting reagent, calculating...