00:01
First, we need a balanced chemical reaction.
00:04
They tell us that f .e.
00:09
C .l .033, so that's iron, three, chloride.
00:18
Decomposes to produce iron three chloride, f .e.
00:25
C .l .3.
00:27
And oxygen, oxygen gas, o2.
00:33
To balance this, we've got one iron, one iron, three chlorines, three chlorines, 9 oxygens.
00:42
To get 9 out of 2 we need 9 halves, but then we need to multiply everything through by 2, 2 2 2 and 9.
00:51
Now we have 2 irons, 2 times 3, 6 chlorines, 6 chlorines, 18 oxygens, 9 times 2, 18 oxygens.
01:05
To determine the mass of oxygen gas that should be produced, we'll take.
01:11
Take the mass of iron three chlorate provided 3 .911 grams and first convert it into moles by dividing by the molar mass of iron 3 chlorate, 1 mole, 306 .20 grams.
01:42
And then from the stoichiometry of the balanced chemical reaction, we see that 2 moles f e...