2. Determine the Avogadro constant from the results of observing the Brownian motion of rubber latex particles (radius 212 nm), given in the following table:
t, s 30 60 90 120
x2, µm2 50.2 113.5 128 144
where t is the observation time;
x2 is the mean square of the displacement (calculated from observations of 50 particles). The experiments were carried out at 17 °C; medium viscosity 1.10 cps.
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