3. Using the method of ultramicroscopy, it was calculated that there are 10 particles of gold hydrosol in a volume of 2.5 mm3. Sol concentration 0.3 g/l, gold density 19300 kg/m3, spherical particles. What is the possible error in the calculation of the average radius of these particles if their shape is assumed to be cubic?

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.