Introduction to the MOLE AND STIOCHEOMETRY

LEARNING GOAL:  STUDENTS CAN UNDERSTAND THE MOLE CONCEPT AND HOW TO SOLVE NUMERICAL EQUATION PROBLEMS USING THE MOLE CONVERSIONS.

Important Vocabulary

  1. Mole (page 79)
  2. Avogadro's Number (page 79)
  3. Molar Mass (page 79)
  4. Mole to Mole Conversion (page 288)
  5. Mole to Grams Conversion (page 289 and 292)
  6. Moles to Particles Conversion (page 82)
  7. Mole to Volume Conversion (page 361)
  8. Limiting Reactant (page 296)
  9. Excess Reactant (page 296)
  10. Empirical Formula (page 234-235)
  11. Molecular Formula (page 236-237)
Representative Particles
  • Atoms
  • Ions
  • Molecules
  • Formula Unit

MOLE CONVERSIONS

The mole conversions are used to do calculations for a balanced chemical equation.  The purpose of these calculations is to not have ANY left over atoms that didn't react.  There are 4 ratios that we can use.
  • Mole to Mass (1 mole = molar mass from the periodic table for an ELEMENT or a COMPOUND)
  • Mole to Particle (1 mole = 6.02 x 10^23 atoms/molecules/f.u./ions)
  • Mole to Volume (at Standard temp and pressure 1 mole = 22.4 L of GAS) For this you can use the ratio or the MOLE HOLE chart.
  • Mole to Mole (from a balanced chemical equation)