Mole Concept PBL Study Guide

Natalie G, Nathan N, Annmarie V, Zach W

Mole Concept Overview

The mole is a huge part of stoichiometry. In chemistry the mole, or Avogadro's number, is a fundamental unit in the SI system. That number is 6.02 x 10^23. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. The special property of a mole is that one mole of an element contains the same number of atoms as a mole of any other element. Moles give us a consistent method to convert between atoms/molecules and grams. One mole of anything equals 6.02 x 10^23.

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Molar Mass

- Mass of one mole of the given substance



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Percent Yield

- Calculated by dividing the experimental yield by the theoretical yield



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Percent Composition

- Percentage by mass of each element in a compound


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Empirical Formula

- A formula giving the proportions of the elements present in the compounds but not the actual numbers or arrangement of the atoms

- Reduced form of the molecular formula



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Molecular Formula

- A chemical formula based on analysis and molecular weight



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Reaction Stoichiometry

- Description of the quantitative relationships among substances as they participate in chemical reactions


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Limiting Reactant

- The reactant in a chemical reaction that determines the amount of product produced


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MLA Citations

"ChemTeam: Stoichiometry: Limiting Reagent." ChemTeam: Go to ChemTeam's Main Menu. N.p., n.d. Web. 21 Feb. 2013. http://www.chemteam.info/Stoichiometry/Limiting-Reagent.html.


"khan Academy." Stoichiometry. N.p., n.d. Web. 18 Feb. 2012. <https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiometry/v/stoichiometry>.