1. The problem statement, all variables and given/known data The gases in this room include oxygen (molar mass 32 g), nitrogen (28 g), water (18 g), and carbon dioxide (44 g). Which type of molecule has the highest average speed? A) O2 B) N2 C) H2O D) CO2 E) They have the same average speed. 2. Relevant equations 1/2 mv^2 = 3/2 kT 3. The attempt at a solution Is the answer water because it's mass is the smallest?