Hello, Me and two other people are doing a science research competition for high school students and for our project we thought of a machine that takes in air through a pump and dissolves CO2 and only CO2. The problem is I don't know what to put in for a solution or pure liquid that would dissolve the CO2. I thought about water but I don't know how to find the pressure needed to dissolve a gas, and also heard about monoethanolamine which dissolves CO2 but don't know how to make it or if it would be very effective. If you can either give me an equation or method to finding the pressure needed to dissolve gases in water, or if MEA is effective or any other methods to do this that would be great. Thanks!