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Digging the Mole Concept in Chemistry

Part of the Chemistry For Dummies Cheat Sheet

The mole (abbreviate mol and sometimes called Avogadro's number) is a conversion number that allows a chemist or chemistry student to move from the microscopic world of atoms, ions, and molecules to the macroscopic world of grams, kilograms, and tons. The mole is used in reaction stoichiometry to predict how much product can be made from a certain amount of reactant or how much reactant is required to produce a certain amount of product.

If you know the particles, moles, or grams of a substance, you can calculate the other two measurements by using the following equation:

1 mole = 6.022 × 1023 particles/mol = formula weight expressed in grams

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