13. Thresholds for the studied sol are: СNaNO3=300 mmol/l, CNa2SO4=295 mmol/l, СMgCl2=25 mmol/l, CAlCl3=0.5 mmol/l. Determine the charge of the sol particles.
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.