Calculating Reacting Masses

• Step 1:

  • Write down balanced equation
• Step 2:

  • Write down relative atomic masses of each element (Ar)
• Step 3:

  • Work out relative molecular mass of each compound (Mr)
• Step 4:

  • Total masses of reactants should equal total masses of product
• Step 5:

  • Write down in words (using units) what this means