00:02
Hi there.
00:03
In this question, we are given moles of the reactant, and we want to know what mass of one of the products is formed.
00:10
So this is a stoichiometry problem, which means the first thing we need is a balanced chemical equation.
00:16
So we are decomposing sodium chloride, and it is forming the element sodium and chlorine gas.
00:24
Chlorine is a diatomic element, meaning in its pure form, it is always a molecule composed of two chlorine atoms.
00:33
So with that two there, we need to balance this.
00:36
We're going to have to put a two in front of nacl to give us two chlorines on each side.
00:41
And then we would need a two in front of n .a.
00:44
All right.
00:45
This question tells us we are starting with 2 .50 moles of the nacl.
00:52
And we're trying to determine the number of grams of chlorine that we can produce.
00:59
Okay.
01:00
Well, to solve this, let's plan this out.
01:02
We can convert from moles of nacl to moles of chlorine by using the mole ratio.
01:14
The mole ratio comes from the coefficients in our balanced equation.
01:18
So this shows us that for every two moles of sodium chloride that we start with, we can produce one mole of the chlorine.
01:26
When there's no coefficient written there, it's understood that it's a one...