What this formula tells us is that the higher your velocity is, the more likely that you will collide with the wall at this position, at this point in time, and the more likely you will escape into the vacuum. So we can rewrite these velocities as rates. So the rate of effusion for gas one divided by the rate of infusion for gas two is equal to the square root of mass one divided by the square root of mass two. And what this equation tells us, which is by the way, grams equation or Gram's law, is that the heavier the molecule is, the smaller its speed and therefore, the smaller its rate. And our individual proportion is the following rate is directly proportional to one over square root of mass. In other words, if our M is larger, then the denominator becomes larger, and so our fracture becomes smaller.