Natural gas (methane) is transported through an uninsulated 6 in. ID commercial steel pipeline, 1 mile long. The inlet pressure is 100 psia and the outlet pressure is $1 \mathrm{~atm}$. What is the mass flow rate of the gas and the compressor power required to pump it? $T_{1}=70^{\circ} \mathrm{F}$, $\mu_{\text {gas }}=0.02 \mathrm{cP}$.