One step in making para-aminobenzoic acid, PABA, an ingredient in some sunscreens, involves replacing one of the hydrogen atoms in a toluene molecule (C7H8) with an NO2 group. Water is also formed. Calculate how many molecules of the nitrotoluene product you can make if you start with 550g of toluene and plenty of nitric acid.

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.