6. Based on the experimental data on the number of particles (n) of the gold hydrosol at different heights of reference levels (h), calculate the Avogadro number NA. Temperature 292 K, radius of spherical particles 3.09*10-9 m, gold density 19.6*103 kg/m3, medium density 1*103 kg/m3:
h, mm 0 50 100 200 300 400 500
n 1431 1053 779 408 254 148 93

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