The Mole & Avogadro's Number
The Mole is a "counting word." We use it like a "pair," or a "dozen" - but for a very large number of very small objects, like atoms, ions, and molecules. Avogadro's Number is 6.02 x 10^23, and is named after the great chemist Amedeo Avogadro. The Mole is used in a lot of conversion problems in chemistry. We work out two practice problems here in full.
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Our Chemistry Lessons playlist gives you practical help for the topics that chemistry students often struggle with. Each video has multiple example problems worked out in full. Topics covered include: Balancing Chemical Equations, the MOLE, Gas Laws, Molar Mass, and more.