Topic 3 - C3

• What is the Avogadro constant?

  6.02×10²³
• What is one mole?

  is just an amount of that substance that contains an Avogadra number of particles - 6.02×10²³ - could be atoms, molecules, ions or electrons
• number of moles = mass of substance ÷ mr of substance
• number of moles = concentration ÷ volume
• What is atom economy?

  percentage of the mass of the reactants that ends up as the intended product when manufacturing a chemical
• What is yield?


  the amount of product made in reaction
• percentage yield = mass of product actually made ÷ maximum theroretical mass of product × 100