17. Based on the nitrogen adsorption isotherm, determine the specific surface of the adsorbent (T = 77K, S0 = 16.2 10-20 m2). The volume of adsorbed gas is reduced to normal conditions:
p/ps……………………………………… 0.029 0.05 0.11 0.14 0.18 0.20
a 10, m3/kg………………………………… 0.48 0.54 0.64 0.68 0.72 0.75

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