Homogeneous nucleation occurs in ice at T= –40°C, if the latent heat of fusion is –3.1 x 108 J/m3 and the surface free energy is 25 x 10-3 J/m2; a) What is the critical radius r* and the activation free energy ΔG*? b) if the number of nuclei that reached critical size is 106 nuclei/m3 at this temperature, calculate the number of molecules per m3 in water (Co).

Homogeneous nucleation occurs in ice at T= –40°C, if the latent heat of fusion is –3.1 x 108 J/m3 and the surface free energy is 25 x 10-3 J/m2; a) What is the critical radius r* and the activation free energy ΔG*? b) if the number of nuclei that reached critical size is 106 nuclei/m3 at this temperature, calculate the number of molecules per m3 in water (Co).