222. The following results were obtained when studying the adsorption of carbon dioxide on 1 gram of charcoal at 0 ° C and different pressures of CO2:
p, mmHg 25.1 137.4 416.4 858.6
m, mg CO-2 0.77 1.78 2.26 2.42

Assuming that the Langmuir isotherm is applicable in this case, determine the maximum amount of CO2 in the monomolecular layer. Determine the specific surface area of coal, assuming that the CO2 molecule is spherical with a diameter of 0.35 nm.

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