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. And so this guy is smaller. Likewise, if if M is smaller, if it's less heavier, then this fraction becomes smaller, and one over a smaller number is a larger number. And that means our rate is larger.