… Is the pressure exerted by each component in a gas mixture Dalton”s Law of Partial Pressures: PT = P1 + P2 + P3 + … PT = (n1 + n2 + n3 +..) If PT = 1 atm, what is Pred? P1 = X PT What about the units of a mol fraction? How does the average motion of gas molecules in a container change with: (a) a change in temperature ? (b) an increase in the volume of the container, at constant temperature? (c) mixing in a different type of gas at the same temperature?