General Chemistry - Lesson 9: Avogadro's Number and Mole Calculations

Amadeo Avogadro

Italian scientist known for his law that is one of the governing principles for gases

Avogadro's number

Number of particles of an element and can be different kinds of particles (atoms, molecules, mols, ions, etc.)

Avogadro's number constant value

6.02x10^23

Conversion Factor for moles with particles given

(1 mole N)/(6.02x10^23 atoms)

Conversion Factor for moles with grams given

(1 mole N)/(N grams)

Conversion Factor for particles

(6.02x10^23 atoms)/(1 mol N)

Conversion Factor for moles for a compound

(6.02x10^23 molecules)/(1 mol N)

Stoichiometry

Calculation of quantities in a chemical reaction

Calculating for Stoichiometry

Balanced chemical equation in both reactants and products

Mole to Mole Relationship

Multiply (number of moles A in the given) to (number of moles B in the equation/number of moles A in the equation)

Mole to Mass Relationship

Multiply (number of moles A in the given) to (number of moles B in the equation/number of moles A in the equation) multiplied to (molar mass of given equation)/(moles of given equation)

Mass to Mass Relationship

Multiply (number of grams A given) to (number of moles A in the equation)/(number of grams A in the equation) multiplied to (number of moles asked)/(number of moles A) multiplied to (molar mass of A)/(number of moles of the equation)