moli acetilena= 20/100x 400= 80mol
moli H2_= 80/100x400= 320mol
2X80<----------80------->3X80
r1:2CH4------> C2H2 + 3H2
40<------------------320-240
r2:CH4 -----> C + 2H2
total moli(r1+r2),CH4=160+40
Cu=moliCH4 transformati in acetilena(r1)x100/ moli total CH4
= 160X100/200=............................CALCULEAZA
V,CH4=200molX22,4l/mol= CALCULEAZA !!!!