Avogadro's Constant

• What is Avogadro's constant in standard form?

  6.02 * 10^23
• What does one mole represent in terms of molecules?

  • One mole represents Avogadro's constant of molecules.
  • This is equal to 6.02 * 10^23 molecules.
• How do you calculate the number of moles of atoms in one mole of water?

  3 moles of atoms
• How do you calculate the number of moles of atoms in one mole of methane?

  5 moles of atoms
• What is Avogadro's constant?

  6.02 times 10 to the power of 23
• How do you calculate the number of moles of atoms in one mole of calcium hydroxide?

  5 moles of atoms
• How do you calculate the number of atoms in one mole of hydrogen chloride?

  1.24 * 10^24 atoms
• How is Avogadro's constant used in chemistry?

  It is used to calculate the number of molecules and atoms in a given sample.
• How do you calculate the number of moles from mass and relative atomic mass?

  • Number of moles = mass (in grams) / relative atomic mass
• How do you calculate the number of atoms in one mole of sodium oxide?

  1.86 * 10^24 atoms
• How many moles are in 48 grams of magnesium with a relative atomic mass of 24?

  2 moles
• What is the process to calculate the number of atoms from moles of a molecule?

  1. Determine the number of atoms in one molecule.
  2. Multiply the number of molecules (Avogadro's constant) by the number of atoms per molecule.
  3. This gives the total number of atoms.
• How do you calculate the total number of atoms in 2 moles of magnesium?

  1.204 times 10 to the power of 24 atoms
• How many moles are in 28 grams of lithium with a relative atomic mass of 7?

  4 moles
• How do you calculate the total number of atoms in 4 moles of lithium?

  2.408 times 10 to the power of 24 atoms
• How do you calculate the number of atoms in a compound like calcium oxide (CaO)?

  • Calculate the relative formula mass (Ca: 40, O: 16, total = 56)
  • Number of moles = mass (56g) / relative formula mass (56) = 1 mole
  • Number of molecules = 1 mole × Avogadro's constant
  • Total atoms = number of molecules × 2 (since CaO has 2 atoms)