5. When measuring nitrogen adsorption on activated carbon, the following data were obtained:
P, hPa 18.6 61.2 179.6 336.5 688.9
A*103, m3/kg 5.06 14.27 23.61 32.56 40.83
Calculate the constants of the Langmuir equation and the specific surface area 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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