Popcorn Counting Unit from AACT Students develop a new method of counting objects, called the PCU, and compare this method to the concept of the mole. Can You Color a Mole? from AACT Students ...

Rather than discussing such a large number of atoms, we can talk more conveniently through the mole unit. A mole of something contains 602,000,000,000,000,000,000,000 or 6.02 x 10²³ of that thing.

You might remember a number, Avogadro’s number, associated with a mole—a mole always has 6.022141793… x 1023 particles of whatever. That’s an absolutely ginormous number.

The mole, meanwhile, is the amount of substance in a system with as many elementary entities as there are atoms in 0.012 kilograms of carbon-12, while the kelvin relates to the temperature and ...