The organic compound di-n-butyl phthalate, C6H22O4 (liquid), is sometimes used as a low-density (1.046 g*m^-1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 653-mm column of di-n-butyl phthalate. The density of mercury is 13.53 g*m^-1
We're doing PV=nRT and Avogadro's...