07 Mole Concept

Labs

• 1. Molar Composition of Hydrates (Modified from p. 780)

     • Lab Proposal: (Student eForm) (Instructor Form)

     • Lab Report: (Student eForm) (Instructor Form)

Spiritual Concept

The Mole: Student eForm Instructor Form

Objectives

Sect 1: Avogadro's Number and Molar Conversions

• 1. Identify the mole as the unit used to count particles, whether atoms, ions, or molecules.

  2. Convert moles to particles (ions, atoms, molecules) and particles to moles using Avogadro's number (p. 228-229).

  3. Convert particles to mass and mass to particles using molar mass conversion (p. 231-232).

Sect 2: Relative Atomic Mass and Chemical Formulas

• 1. Use the periodic table or isotopic composition data to determine the average atomic masses of elements (p. 235).

  2. Infer information about a compound from its chemical formula.

  3. Determine the molar mass of a compound from its formula (p. 239).

Sect 3: Formulas and Percentage Composition

• 1. Determine a compound's empirical formula from its percentage composition (p. 242).

  2. Determine the molecular formula or formula unit of a compound from its empirical formula and its formula mass (p. 245).

  3. Calculate percentage composition of a compound from its molecular formulas or formula unit (p. 247).

Math Skills

• 1. Converting Moles and Particles (Problems A & B)

  2. Converting Mass and Particles (Problems C & D)

  3. Average Atomic Mass (Problems E)

  4. Molar Mass (Problems F)

  5. Empirical Formulas from Percentage Composition (Problems G)

  6. Molecular Formula from Empirical Formula (Problems H)

  7. Molecular Formula to Percentage Composition (Problems I)