00:01
So the problem is giving the percent of carbon and hydrogen in a compound that is made of carbon, hydrogen, and oxygen.
00:08
So we can start finding the percent of oxygen.
00:11
That would be 100 percent minus the amounts of carbon and hydrogen.
00:14
So we get that we have 10 .15 percent of oxygen.
00:19
The molar mass is given and is equal to 472 .73 grams per month.
00:30
And the problem suggests not trying to.
00:32
To find the coefficients from the very beginning, but instead just using the molar mass and the percent to directly find the coefficients.
00:43
So how will do that? if we know that the percent of carbon in the compound is 78 .76, we can then figure out that from the 472 .73 grams per mole, that is a molar mass, the 78%, 78 .76 % correspond to carbon.
01:05
So i will divide it by 100%.
01:08
And this is equal to 372 .32 grams.
01:14
So it means that out of the molar mass, 372 grams correspond to carbon.
01:22
So how can i know how many carbon atoms are those? just divided by 12...
