Avagodro's number (The Mole) ... you are not researching that cute little mole on your cheek! Avagodro's number refers to The Mole, a vital component to chemistry. This video segment will discuss the mole and further elaborate on...

Most scientists use a common language of measurement, called the International System of Units, that is recognized in labs all over the world. In thie following video David Caprette, PhD, explains this language and its well-established...

A biologist must be able to work with and understand a variety of mixtures. In the following video David Caprette, PhD, describes types of mixtures, and their properties, that might be encountered in a biological laboratory, and...

This lesson will provide examples of converting from moles to volume of a gas.

This lesson will provide examples of converting from volume of a gas to moles of a gas.

Video tutorial presents an introduction to the concept of a mole as a number. [9:43]

Figure out the number of moles of gas we have using the ideal gas equation: PV=nRT. [10:08]

How many atoms in 5.5 moles? How many moles is 4.6 x 10^24 sulfur atoms? In this video Tyler DeWitt helps you solve problems like these--converting back and forth between moles and the number of atoms or molecules. DeWitt will use both a...

In this video viewers will do more practice problems, converting between moles, atoms, and molecules. This is the second part of the video. [6:58]

A video lecture applying the ideal gas equation to solve for the number of moles contained in a balloon. [10:08]

This lesson will explain the variables in the ideal gas law equation. It is 2 of 2 in the series titled "Ideal Gas Law Equation."

This lesson will present several example math problems utilizing the ideal gas law. It is 2 of 2 in the series titled "Ideal Gas Law Equation Examples."

This lesson demonstrates how to convert from grams to moles. It is 1 of 2 in the series titled "Converting from Grams to Moles."

Watch this short video to get an idea of just how big Avogadro's number is. The examples are certainly clear, and the little tune is catchy. [3:49]

Learn about moles to figure out how many atoms you have in something using the periodic table, molar mass, and Avogadro's number. [10:08]

A tutorial which explains what moles are and why they are important. Learn how to abbreviate the mole number (Avogadro's number) using scientific notation, and how giant this number is. [10:50]

An introduction to the concept of a mole and its role in the field of thermodynamics. Using a periodic table, one learns how to calculate the number of moles a quantity of an element has, based on its atomic mass. Goes on to explain how...

See how each of these terms (molarity, molality, osmolarity, osmolality, tonicity) tells us something different about a solution in the Khan Academy video. [4:03]

Review for the AP Chemistry exam with this video showing a worked free response problem. This problem is part 1 of 2 showing how to calculate how many moles of ethene is produced from dehydration reaction with ethanol.

Sal explains the concept of a mole. Then he derives the molar version of the ideal gas law PV=nRT, where the gas constant R=831 J/molK. [10:14]

Explore stoichiometry in this video by making an analogy to the process and making s'mores. Then see a stoichiometry example using a real chemical equation. [3:46]

This lesson explains how to approach practice problems when trying to determine what final quantity is being asked for. It is 1 of 2 in the series titled "Mixed Conversion Problems."

This lesson demonstrates how to convert from moles to grams. It is 1 of 2 in the series titled "Converting from Moles to Grams."

In this video, Paul Andersen defines and explains the importance of the mole. The mole is simply a number (like a dozen) used to express the massive number of atoms in matter. It serves as a bridge between the mass of a compound and the...