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...
Professor Dave Explains
Molar Gas Volume: Stoichiometry With Gases
We know a lot about ideal gases, including how to use all of the ideal gas laws. But we haven't talked much about how to do stoichiometry with gases. As it happens, we can do stoichiometry with gases not just using molar quantities, but...
Curated Video
Stoichiometry
It explains the concept of Stoichiometry, Concentration of Solution, Mole Fraction, Molality & Molarity.
Professor Dave Explains
The Mole: Avogadro's Number and Stoichiometry
Yes, I know moles are adorable furry creatures. This is a different kind of mole! A numerical mole. And we need to understand them to be able to make predictions about reactions. Let Professor Dave take you through the finer points.
Professor Dave Explains
IIT/JEE Chemistry Practice #10: Gas Stoichiometry
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #6: Stoichiometry/Precipitation Reactions
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Bozeman Science
Multistep Reactions
In this video Paul Andersen explains how an overall chemical reaction is made up of several elementary steps. The stoichiometry of this equation can be predicted but the rate law must be measured. If the elementary steps of the reaction...
Professor Dave Explains
IIT/JEE Chemistry Practice #2: Molar Mass/Stoichiometry
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Curated Video
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...
Professor Dave Explains
Calculating Ion Concentrations in Solution
We know that concentration is typically expressed with molarity, which is moles per liter. But how do we know how many moles of solute are present in solution when an ionic solid dissolves in water? It's not so simple because these will...
Professor Dave Explains
Practice Problem: Enthalpy of Vaporization
Can we do stoichiometry regarding phase changes? Sure! If we know how many moles of a substance we have, and the energy associated with each mole of that substance undergoing a particular phase change, we can get the energy associated...
Professor Dave Explains
Practice Problem: Enthalpy of Combustion
Stoichiometry for combustion? You bet! If we know about moles, we can calculate energy changes. Give it a try!
Professor Dave Explains
Practice Problem: Titration Calculations
Titration is a way to do stoichiometry with acids and bases. The equivalence point tells us something about the moles of acid and base that are present in solution at that moment. And if we know one of those values, we can know the...
Professor Dave Explains
Practice Problem: Gravimetric Analysis
What the heck is gravimetric analysis? Well let's say we want to know how much of a substance is in some mixture. We could toss it in solution and cause it to form a precipitate with some other ion in solution. We can measure the mass of...
Curated Video
In Depth: Atomic Mass Units
Learn the basics about Atomic Mass Units. The atomic mass is used to find the average mass of elements and molecules and to solve stoichiometry problems. Find out more in this video!
Professor Dave Explains
Practice Problem: Density of a Gas
If we can use the ideal gas law to find the molar mass of a gas and therefore identify the gas, what can we do with the density of a gas? Well, pretty much the same thing, it just involves one extra calculation, so let's give it a try!
Catalyst University
General Chemistry | Ideal Gas Law (PV=nRT) [Example #1]
In this video, we will do an example calculation using the ideal gas equation of state, PV=nRT. [Solving for volume, V]
Professor Dave Explains
Practice Problem: Empirical and Molecular Formulas
How do we know how many atoms of each element are in a particular compound? Through clever experiments! Here let's practice using percent mass information to get the empirical and molecular formulas of a particular compound.
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 #24: Molar Mass of a Gas
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Curated OER
The Mole and Avogadro's Number
Sal introduces chemistry students to the concept of "moles." He points out that a mole is number that helps a student to translate between grams and atomic mass units of any substance. Sal uses the element Aluminum to illustrate this...
JFR Science
Solution Stoichiometry: How Much Vinegar Is Needed to Clean My Teapot?
Solution stoichiometry ... reducing waste, one calculation at a time. Chemistry scholars examine the concepts and calculations involved in solution stoichiometry with a video from JFR Science. The narrator gives examples of when to use...
Berkeley University of California
Stoichiometry
Can you say stoichiometry five times quickly? Watch an informative video to learn the basics of stoichiometry, including how to pronounce it. Viewers also learn the relationship between the number of grams, number of moles, and number of...
Socratica
Chemistry: Intro to Stoichiometry with Grilled Cheese Sandwiches
What do grilled cheese sandwiches have to do with chemistry? Show your class the answer and introduce them to stoichiometry using an intriguing video from the Socratica chemistry playlist. Through an easy example—making a grilled cheese...