equations

• relative formula mass of reactants = relative formula mass of products
• Ar x number of atoms of that element / Mr of the compound x 100
• uncertainty = range / 2
• moles = mass / Mr
• Avogadro's constant : 6.02 x 10 (to the power of 23)
• concentration (g/dm³) = mass (g) / volume (dm³)
• concentration = moles / volume
• volume of gas = (mass of gas / Mr of gas) x 24