123. Задачка по химии №012 336

3. Average radius of smoke particles r= 1*10-8 m, particle density p=1.2*103 kg/m3, T= 290 K, air density can be neglected. Calculate the concentration of smoke particles at a height of 1 m, if at the initial level their concentration was 1.5*10-3 kg/m3.

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