Go to Top Closure Students have trouble understanding the concept of the mole as a number. Seeing samples of common elements in molar quantities illustrates the differences in size of atoms, densities, and distances between particles in different phases. The number of moles in any sample of a substance can be determined by dividing the mass of the sample by its molar mass. Go to Top Handout Ans. Nitrogen or Dinitrogen is largest because it is the only gas.
Gases have small intermolecular interactions.
Any gas could be named. Oxygen, Hydrogen, etc. Many possible descriptions.