This is a reaction of membrane reactor of methanol synthesis by hydrogenation of carbon monoxide the things that i have the final $($outlet$)$ mole flow rate but i dont have the inlet flow rate and i have to find it by using the extent and n in and all that by using the reaction the things i am working into this for $4$ months and the inlet is not equal to the outlet so please i need you help also i am not sure does the mebrane reactor mine has $3$ or $2$ so please find the n in for each component and answer my question please i will be thankful for you for the rest of my life So I want $1$ things find the n inlet only