Sort the given molecules into organic and inorganic substances. c3n2h4 albr3 c6h5f cro3 h2o2 c12h22o11

We can easily distinguish between organic and inorganic molecules cust by looking at their molecular composition.
Organic molecules are always made out of carbon (C) atoms. Hydrogen atoms (H) are often bound with them in organic molecules, with the addition of other atoms like nitrogen (N), fluorine (F) etc. 
So, the organic molecules from the list above are C3N2H4 (imidazole) C6H5F (fluorobenzene) and C12H22O11 (sugar named sucrose) .

The rest of the molecules are inorganic H2O2 (peroxide), CrO3 ( chromium trioxide) and AlBr3 (aluminum bromide)

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