The aqueous solubility of CO2 at 20 degrees Celsius and 1.00 atm is equivalent to 87.8 mL of CO2(g), measured at STP, per 100 mL of water. What is the Molarity of CO2, in water, that is at 20 degrees Celsius and saturated with air at 1.00 atm? The volume % of CO2 in air is 0.0360%.