00:02
Hello, so we can see from the graph that there was a rise, right? so we're going to rise and then after this it became flat.
00:23
So the flat portion means that the reaction stopped, okay? because the jars have equal amount of chlorine, right? so, but it can only take so much, right? it can only take so much of sodium.
00:38
So if you continue to add sodium and you run out of chlorine, then the reaction is going to stop.
00:45
So of course from this, up to that point, there's still reaction going on the floor side, you run out of chlorine, so the reaction stops.
00:58
Then for the second part, we can get the molecular weight of all the elements to sodium.
01:07
Is 23 and we have double so that becomes 46 right chlorine is 35 .5 times 2 it's 71 of course this is sodium plus chlorine right that's 23 plus 35 .5 and then that's 2 here so we have 2 okay so we're just going to do proportion right so if you have 406 grams of sodium giving you 117 as you can see in the equation they want to know how much this is going to represent okay and that's going to be 50 .9 in the cl right so we're basically using proportion for almost other questions when you come to c you're doing the same thing 46 is giving a 71 so what will a 40 give you? because if you if you look at the graph, you realize that at 40 the reaction stopped, right? at 40 the reaction stopped.
02:21
So that's where the 40 is coming from.
02:24
So we want to know 40 gram of sodium is going to react to what amount.
02:33
So, oops.
02:37
So this is the mass of the chlorine in a jar, okay? mass of chlorine in a jar...