Now, notice that Avogadro's number multiplied by the mass of that object gives us the molar mass of that object. Remember, the molar mass of some particle is basically the mass of Avogadro's number of particles. So if we take this particle and we collect Avogadro's number, we get a mass value that is equal to NA multiplied by m. So this is another way of basically describing that same equation. So let's rewrite this with uppercase m, where uppercase m is our molar mass and the bottom stays as NA multiplied by F. So this is another equation that gives us that same sedimentation coefficient given by s. So these two equations here are equal to one another. The only difference is in this case, we don't have Avagado's number. We have the lowercase m, where m is the mass of that single particle.