Consider a PEMFC stack with n$\_($c$)=100$ cells in series, producing an electrical power of $50$ kW

working at a single cell voltage of V$\_($c$)=0\mathrm{.}9$V$.$ Calculate:

the mass flow of H$\_(2)$ consumed at the anode, expressed in k$($g$)/($h$)$

the mass flow of O$\_(2)$ consumed at the cathode, expressed in k$($g$)/($h$)$