Four sealed samples are described on the molecular level:
I. Particles arranged in a rigid lattice, undergoing only vibrations.
II. Particles in close contact, sliding past one another while remaining in nearly constant contact.
III. Particles far apart, moving randomly in straight lines except during brief collisions; intermolecular forces are negligible.
IV. Same as III but at greatly increased pressure; average spacing is still an order of magnitude larger than particle diameter.
Which two samples are most likely to have similar molar volumes?
a) III and IV
b) II and IV
c) I and II
d) I and IV