PHYS 1500 Lecture Notes - Lecture 20: Ideal Gas Law, Jmol
Document Summary
Nu(cid:373)(cid:271)er of parti(cid:272)les i(cid:374) a (cid:373)ole is a(cid:448)ogadro"s (cid:374)u(cid:373)(cid:271)er. The number of molecules in the gas is large and the average separation between them is large compared to their dimensions. The (cid:373)ole(cid:272)ules o(cid:271)ey ne(cid:449)to(cid:374)"s la(cid:449)s of (cid:373)otio(cid:374), (cid:271)ut as a whole they move randomly. The molecules interact only by short-range forces during elastic collisions. The molecules make elastic collisions with the walls. All molecules in the gas are identical. The pressure is proportional to the number of molecules per unit volume and to the average translational kinetic energy of a molecule. Pressure can be increased by increasing the number of molecules per unit volume and by heating it up. Temperature is proportional to the average kinetic energy of the molecules. *total translational kinetic energy proportional to the absolute temperature. In a monatomic gas, the ke is the only type of energy the molecules can have. U is the internal energy of the gas.
