6. Calculate the total surface of all particles S and the number of particles N in a disperse system, where the dispersion medium is water, the dispersed phase is platinum, cubic particles are 40 nm in size, the density of the dispersed phase is 21.4 g/cm3, and the mass is 2 kg.

If the file does not open for you, install the Rar archiver program. Inside the archive, the solution is in WORD format.