27. Решение задачки по химии №1215

1. The concentration of gold sol is 1 g/l. The particles have the shape of a cube with an edge of 4 * 10-8 m, gold p = 19.6 g/cm3. Calculate: a) how many particles are contained in 1 liter of gold sol; b) what is the total surface area of the particles. Indicate the type of dispersed system under consideration, according to the particle size of the dispersed phase.

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