By absorbing it into an amine solution, a gas absorption device can be used to remove carbon dioxide from the air. Hempl created a method to quantify the CO2 concentration in the exit gas stream in order to assess the efficacy of these columns. Assume that the gas stream is flowing at a rate of 100 liters per minute and that the mole fraction of CO2 in the air at the exit is 0.2. The gas stream is sampled for 60 milliliters. How much 1 M NaOH solution would be required to react with the CO2 in this sample in milliliters? What would be the pressure drop in this gas sample if the gas volume remained constant?

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