Ethylene gas ( $\mathrm{MW}=28, k=1.3, \mu=0.1 \mathrm{cP}$ ) at $100^{\circ} \mathrm{F}$ is fed to a reaction vessel from a compressor through $100 \mathrm{ft}$ of $2 \mathrm{in}$. sch 40 pipe containing 2 plug valves, one swing check valve, and 8 flanged elbows. If the compressor discharge pressure is $3500 \mathrm{psig}$ and the pressure in the vessel is $500 \mathrm{psig}$, what is the flow rate of the gas, in $\operatorname{scfm}\left(1 \mathrm{~atm}, 60^{\circ} \mathrm{F}\right)$ ?