Write the structural formula of a compound of molecular formula C _{4}H_{8}Cl_{2} in which

(a) All the carbons belong to methylene groups

Hey everyone. So, for this question it wants us to draw the structural formula for this compound C4H8Cl2 with no, with, excuse me, all methylene groups right, so remember that a methylene group, let's write it in there's going to be, what? a CH2 group, so we can only draw this compound with CH2 groups, so we can represent it as four carbons like this and either way to make all of them CH2 groups, we simply just add a Cl here and a Cl here, so that here we have a carbon with two hydrogens, here's a carbon with two hydrogens, same here and same here, these are all CH2 groups or methylene groups, okay? you'll notice that in total we have how many hydrogens? we have eight. WE have two chlorines and 4 carbons so we're good. Now, for a structural formula, we can be represented like this with all the atoms what we can even show it in a different representation, so that we have a Cl group here, on an attached to it, we have it CH2 a CH2, CH2, the last CH2 and also a Cl, so it can be represented in both of these ways by which either way you prefer the structural formula number one to just show me atoms involved, so you can show it like this of if you want you can represent it that way, if it's easier for you to draw and then convert it to our other structure, okay? So, just remember what a methylene groups is and always remember to count the number of carbons and hydrogens in your structure.