Two: 1,1-dichloroethane and 1,2-dichloroethane.
It has 2 isomers.
Three
3.982 g C6H4Cl2 (1 mole C6H4Cl2/146.992 grams)(6 mole C/1 mole C6H4Cl2)(6.022 X 10^23/1 mole C)(1 mole C/6.022 X 10^23) = 0.1625 moles of Carbon atoms
Dichlorobenzene
nonane(c9h20) has 35 isomers.
it has 4 isomers
1 carbon and 4 chlorine
There is only 1 form of propanal.
3
3
C6H4Cl2
Three
3 different isomers exist.
There are only two polar isomers for c2h2cl2 molecule.