Răspuns:
10g subst.........12,20dm³CO2...........4,93gH2O
110g.........................x....................................y
x=134,2 dm³co2
y= 54,23gH2O
niu.CO2= V/Vm= 134,2/22,4mol=6molCO2=======> niuC=niuCo2=6molC
niu,H2O= m/M= 54,23/18mol=3molH2O====>niuH=2niuH2O=6molH
Formula moleculara C6H6Ox
110= 6x12+6x1+16x--------> x=2
formula moLeculara...C6H6O2
Explicație: