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  • Step 1 in determining empirical formula
    Write down the mass (in grams) of each element given in the compound.
  • Step 2 in determining empirical formula
    Convert all masses into grams by assuming there are 100 grams of the compound.
  • Step 3 in determining empirical formula
    Convert all the masses into moles. Use at least 4 decimal places to avoid rounding errors.
  • Step 4 in determining empirical formula
    Divide each mole value by the smallest mole value to obtain whole number ratios for each element.