00:01
Hi, so to solve for this, we have to solve first for the mass of the component elements.
00:08
We'll start with carbon using the amount of co2, 16 .64.
00:13
This is grams of co2.
00:15
Convert to moles by dividing the molar mass of co2, 44 .01 grams.
00:20
Then we have here moles of co2.
00:23
And for every one mole of co2, we have one mole of carbon.
00:34
Multiply the molar mass of carbon, 12 .01 grams per mole.
00:39
Now cancel some units, grams co2, moles of co2, moles of carbon.
00:43
And this will give us 4 .54 grams of carbon for h hydrogen.
00:54
We have 5 .4551.
00:58
This is grams of water.
01:01
Divide the molar mass of water, 18 .02 grams.
01:04
And then we have here moles of h2o.
01:07
For every one mole of water, we have two moles of hydrogen, two moles of h.
01:14
Multiply the molar mass of h, 1 .01 grams per mole.
01:19
So we can now cancel some units.
01:23
And this will give us 0 .612 grams of hydrogen.
01:29
So for oxygen, we'll just subtract the mass of carbon and hydrogen from the amount of the sample.
01:37
So we have 10 grams minus the mass of carbon, 4 .54 grams.
01:42
And then hydrogen, 0 .612 grams.
01:45
This will give us 4 .848 grams of oxygen.
01:57
Next step is to solve for the number of moles.
02:00
We have 4 .54 grams of carbon.
02:04
Divide the molar mass, 12 .01 grams.
02:07
And we have here moles of carbon.
02:10
Cancel this one.
02:12
Let's use red.
02:15
This will give us 0 .378 moles of carbon.
02:22
For hydrogen, we have 0 .612 grams of h.
02:27
Divide the molar mass, 1 .01 grams...