Suppose the following data were collected by an experimenter who was observing the distance traveled by various gases in a set amount of time through a horizontal glass tube at room temperature and pressure.

Gas Distance (to the nearest cm)
SO2 50
HCl 66
CH4 100
SO3 44

a) state your observations regarding this data as briefly and to the point as possible, and
b) design a hypothesis to explain your observation, and
c) suggest an experiment to test your hypothesis.