moles

• What does relative atomic mass tell us?

  The mass of a single atom of an element
• How is relative atomic mass calculated?

  From average masses of isotopes weighted by abundance
• Where can you find relative atomic masses?

  On the periodic table
• What does the term "mole" refer to in chemistry?

  A very large number of particles
• What does one mole represent?

  A specific number of atoms or molecules
• Why is the mole concept useful in chemistry?

  It helps calculate the number of atoms in reactions
• What is the equation to calculate the number of moles?

  Number of moles = mass in grams / relative atomic mass
• What is the process to calculate the number of moles from mass?

  • Identify the mass in grams
  • Find the relative atomic mass
  • Use the formula:

  $\text{Number of moles} =$$\frac{\text{mass in grams}}{\text{relative atomic mass}}$