5. When measuring nitrogen adsorption on activated, the following data were obtained:
Р, hPa 18.6 61.2 179.6 336.5 668.9
А*103, m3/kg 5.06 14.27 23.61 38.56 40.83
Calculate the constants of the Langmuir equation and the specific surface of the adsorbent. The density of nitrogen is 1.25 kg/m3, and the area occupied by one nitrogen molecule is 0.16 nm2.

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