In order to grow MWCNTs I need to have certain content of water vapor dissolved in the argon gas. The amount of water vapor can be changed with temperature of the water that argon bubbles through. I have Argon entering a flask with water in it. The flow of the argon is 120 ml per min. It makes bubbles about 3 mm in diameter and travels about 2 cm through the water in the flask. The bubble is in contact with water for about 0.2s. How would I go about estimating how much water vapor can mix with the dry argon gas when the temperature is 20C?