Mole Definition

A mole is a unit of mass.
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Mole Definition: a chemical mass unit, defined to be 6.022 x 1023molecules, atoms, or some other unit. The mass of a mole is the gram formula mass of a substance.

Examples: 1 mole of NH3 has 6.022 x 1023molecules and weighs about 17 grams. 1 mole of copper has 6.022 x 1023atoms and weighs about 63.54 grams.

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Helmenstine, Anne Marie, Ph.D. "Mole Definition." ThoughtCo, Feb. 7, 2017, thoughtco.com/mole-definition-in-chemistry-606377. Helmenstine, Anne Marie, Ph.D. (2017, February 7). Mole Definition. Retrieved from https://www.thoughtco.com/mole-definition-in-chemistry-606377 Helmenstine, Anne Marie, Ph.D. "Mole Definition." ThoughtCo. https://www.thoughtco.com/mole-definition-in-chemistry-606377 (accessed December 14, 2017).