PI$12$

$1000$ mol$/$s $10\%$ mole ethylene $90\%$: $2$C$,$H$,+0,2$ CHO $$ CH$4+302$ CO$2+2$ H$2$O $$: $20$ mol$/$h C$,$H$,$O $75$ molh C$2$H$4$ a $$ b $$