Particle size analysis by sieving showed that the population density (n) at 0.718 mm for a 335.0 g sample of a crystalline material was 255 x 103 mm-1. The sieve mesh sizes just below and above 0.718 mm were 0.595 mm and 0.841 mm. The density () of the material was 1.588 g cm- and the volume shape factor (ky) for the crystal particles was 1.0. Using the following equation, where w is the mass of crystals retained, calculate the fraction of the sample retained on the 0.595 mm sieve. w n = okyLAL Discuss how the concept of population density can relate to both experimentally measured crystal size distribution and the effect of nucleation and growth rates in crystallisations