82. Решение задачки по химии №2

5. Find the dispersion and specific surface area of ​​coal used in modern furnaces for pulverized fuel, if it is known that coal dust is pre-sifted through a sieve with holes of 75 µm. The density of coal is 1.8 g/cm3. Consider the system to be monodisperse. Give the answer in m–1 and in m2/kg.

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