" How Many total isomers are possible for the formula "C_(2)FClBrl" ? "

How many isomers are possible with the formula C_(2)ClBrFI ?

How many functional isomers are possible for the formula C_4 H_8 O ?

How many structural isomers are possible for the molecular formula C_(4)H_(8) which can undergo ozonolysis?

How many structural isomers are possible for the molecular formula C_(5)H_(11) Br ?