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X 44 g
M C2H5OH = 2 x 12 + 6 + 16 = 46 g/mol
M CO2 = 12 + 2 x 16 = 44 g/mol
46 g C2H5OH ----- 2 x 44 g CO2
X ------------------- 44 g
X = 23 g etanolu
Zad 2 .
X - CH2=CH2 - eten
Y CH3-CH3 - etan