Recall that Rutherford observed that about 1 out of every 10,000 alpha particles bounced back. What does this tell you about the relative size of the small dense, positive nucleus compared to the size of the rest of the atom?

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.