HW Liquid benzene and liquid n$-$hexane are blended to form a stream flowing at a rate of $1000lb\frac{m}{h}.$ An on$-$line densimeter $($an instrument used to determine density$)$ indicates that the stream has a density of $0\mathrm{.}850\frac{g}{m}l.$ Using specific gravities from Table B$\mathrm{.}1,$ estimate the mass and volumetric feed flow rates of the two hydrocarbons to the mixing vessel $($in American engineering units$).$