Consider a PEMFC operating at $0\mathrm{.}8$ A$/$cm$2,70$C$,$ and $1$ atm. Hydrogen gas at $90$C and $80\%$ relative

humidity is provided to the fuel cell at a rate enough to produce $8$ A$.$ The fuel cell area is $8$ cm$2$ and the

drag ratio of water molecules to hydrogen, $\backslash$alpha $,$ is $0\mathrm{.}8.$ Find the relative humidity in the anode exhaust,

which exits at $70$C$.$ At what water phase in the exhaust?

$\{$Final answer: $244\%\}$