To determine the monolayer coverage of the gas on the surface at 298 K, we need to use the Langmuir adsorption isotherm equation: = P * K * 1 - / 1 + P * K where: = fractional coverage of the surface monolayer coverage P = pressure of the gasK = Langmuir adsorption constant, which is a function of temperatureHowever, the problem does not provide the necessary data pressure values and the Langmuir adsorption constant to calculate the monolayer coverage. The student would need to plot the data and analyze the graph to determine the monolayer coverage or provide the necessary data for the calculation.