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.......... 2*22,4dm³ ----- 60g............
...........100dm³ ------ xg................
44,8 x = 100*60
x = 134g
2) C2H5OH + 3 O2 ----> 3 CO2 + 3 H2O
.......46g ---- 3*22,4dm³......
.......120g ---- x ......
x * 46 = 120 * 67,2
x = 175dm³