Chemistry: help please
posted by Erin .
What is the millimolar solubility of oxygen gas,O2, in water at 20 degree celsius, if the pressure of oxygen is 1.00atm?

http://www.engineeringtoolbox.com/oxygensolubilitywaterd_841.html

answer is 1.4mM
part B answer is 0.29mM 
What is the millimolar solubility of oxygen gas, , in water at 12 degrees celcius , if the pressure of oxygen is 1.00 ?

I am assuming that you are using mastering chemistry. If so you should have a graph that displays the answer. You just have to look at the graph follow 12 degrees C on the graph to where it intersects with the line and your answer would be the y value. In this case the value is 1.6.
Answer: 1.6mM