Mass calculations

• n = m/M
• m = Mass (g)
• M = molar mass (gmol-1)
• n = number of moles (moL)
• The mole is a way of counting the number of particles in something.
• Avogadro's constant is: 1 mole = 6.02 x 10^23 particles
• c = n/V (concentration of using units mols and litres)
• V = Litres (L)
• c = molL-1 (mol per litre)
• Two equations are used to find the concentration of a solution: c = m/V and c = n/V
• c = g/L (grams per litre)
• Concentration is a way of measuring the number of particles in a give volume
• Titre: Volume change in your burette
• Aliquot: Volume of the pipette into the flask, for titration
• c(1) = c(2)/M (c(2) is the concentration of the solution in moles per litre)