00:02
Here in this problem, given a hydrocarbon has 79 .9 mass percent carbon, we have to find the empirical formula of the compound.
00:12
Now, here given percent carbon, 79 .9 percent.
00:18
And it is a hydrocarbon.
00:20
So, another element is hydrogen.
00:22
So percent hydrogen will be 100 minus 79 .9 percent.
00:28
And that is 20 .1%.
00:32
So let's make the columns.
00:35
First one is elements, then percent weight, then atomic weight, then we'll find out the moles, then we'll make it the simple ratio.
00:56
First one is carbon, then hydrogen.
00:59
Percent 79 .9 percent and hydrogen 20 .1 percent.
01:08
Atomic mass of carbon is 12 .0 .1 and hydrogen, it is 1 .008...