Avagadros constant

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Created by
Mohamed Sid Ahmed

Cards (17)

  • Avogadro's constant can be used to calculate the number of molecules and atoms in a given sample
  • Avogadro's constant is the number of particles (atoms, molecules or ions) in one mole of any substance
  • Avogadro's constant is normally written in standard form as 6.02 * 10^23
  • Mole

    Also called Avogadro's constant, with a value of 6.02 x 10^23
  • Calculating the number of moles of atoms in a given number of moles of a molecule

    1. Look at the formula of the molecule
    2. Count the total number of atoms in one molecule
    3. Multiply the number of moles of the molecule by the number of atoms per molecule to get the number of moles of atoms
  • Calculating number of atoms in a given number of moles of molecules
    1. Calculate number of moles from mass and relative atomic mass
    2. Multiply moles by Avogadro's constant to get number of atoms
  • Calculating the number of moles of atoms in 1 mole of:
    • Water (H2O) - 3 moles of atoms
    • Methane (CH4) - 5 moles of atoms
    • Calcium hydroxide (Ca(OH)2) - 5 moles of atoms
  • Calculating the number of atoms in 1 mole of a compound
    1. 1 mole of a compound contains Avogadro's constant (6.02 * 10^23) molecules
    2. Look at the formula of the compound to determine the number of atoms per molecule
    3. Multiply the number of atoms per molecule by Avogadro's constant to get the number of atoms in 1 mole
  • Avogadro's constant is the number of particles (atoms, molecules or ions) in one mole of any substance
  • Avogadro's constant is normally written in standard form as 6.02 * 10^23
  • Calculating the number of moles of atoms in a given number of moles of a molecule

    1. Look at the formula of the molecule
    2. Count the total number of atoms in one molecule
    3. Multiply the number of moles of the molecule by the number of atoms per molecule to get the number of moles of atoms
  • Calculating the number of moles of atoms in 1 mole of:
    • Water (H2O) - 3 moles of atoms
    • Methane (CH4) - 5 moles of atoms
    • Calcium hydroxide (Ca(OH)2) - 5 moles of atoms
  • Calculating the number of atoms in 1 mole of a compound
    1. 1 mole of a compound contains Avogadro's constant (6.02 * 10^23) molecules
    2. Look at the formula of the compound to determine the number of atoms per molecule
    3. Multiply the number of atoms per molecule by Avogadro's constant to get the number of atoms in 1 mole
  • Calculating the number of atoms in 1 mole of:
    • Hydrogen chloride (HCl) - 1.24 * 10^24 atoms
    • Sodium oxide (Na2O) - 1.86 * 10^24 atoms
  • Avogadro's constant can be used to calculate the number of molecules and atoms in a given sample
  • Mole

    Also called Avogadro's constant, with a value of 6.02 x 10^23
  • Calculating number of atoms in a given number of moles of molecules
    1. Calculate number of moles from mass and relative atomic mass
    2. Multiply moles by Avogadro's constant to get number of atoms