Ethanol vapor is being absorbed from a mixture of alcohol vapor and water vapor by means of a nonvolatile solvent in which alcohol is soluble but water is not. The temperature is 97°C, and the total pressure is 760 mm Hg. The alcohol vapor can be considered to be diffusing through a film of alcohol-water vapor mixture 0.1 mm thick. The mole percent of the alcohol in the vapor at the outside of the film is 80 percent, and thatalcohol-water vapor mixtures at 25°C and 1 atm is 0.15 cm²/s. Calculate the rate of diffusion of alcohol vapor in kilograms per hour if the area of the film is 10 m².