119. Задачка по химии №011 948

In the study of sulfur hydrosol by the Deryagin-Vlasenko flow ultramicroscopy in a volume of 2.00 * 10-5 cm3, passing through the counting field of the microscope, an average of 100 particles was found. Calculate the radius of the sol particles, knowing its concentration 65.0 mg/m3 and sulfur density 1.92 g/cm3.

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