00:03
Hi there.
00:04
In this question, we went to fill in the missing hydrogens and count how many they are.
00:09
Well, we know that carbon, each carbon should have four bonds.
00:15
So any bond, any carbon that doesn't have four bonds, the remaining bonds go to a hydrogen.
00:22
And we have carbons at the end of every line segment here.
00:26
So let me go ahead and fill in carbons.
00:41
Okay, so we have our carbons filled in.
00:44
Let's look first at the chlorine.
00:45
There are no hydrogens on the chlorine.
00:47
Both of the nitrogen's already have three bonds and one lone pair, so the nitrogen don't have any hydrogen, and the oxygen already has two bonds.
00:56
So the oxygen does not have any hydrogen.
00:58
So all the hydrogens are going to be on the chlorines.
01:01
So let's see how many we have.
01:02
Let's just start randomly at this carbon over here.
01:07
And as we look, we see that it has one, two, three bonds already.
01:12
So that means it will have one carbon, or one hydrogen, rather.
01:19
For the fourth bond on the carbon.
01:21
Going clockwise, the next carbon also has three bonds, so it's going to have a hydrogen for its fourth bond, which is also true of the next carbon clockwise.
01:32
Continuing around clockwise, the next carbon has a double bond and two single bonds, so it won't have any hydrogen.
01:39
However, this one will and this one will, completing the fourth bond for each of those carbons.
01:47
Okay, let's go to the next.
01:49
Ring here.
01:50
So looking at that carbon that i just drew the arrow to, it has a double bond to the nitrogen and two single bonds...