00:01
Hi there.
00:02
In this question, we are working with acetic acid, which is ch3, c -o -o -h.
00:10
And we are starting with the mass of this, and we want to know how many hydrogen atoms we have in that mass of this c -o -o -h.
00:20
Sorry about that four there.
00:22
I was thinking four hydrogen and row to four instead of the h.
00:24
All right.
00:25
So let's look at some equality, some things we know here.
00:27
For example, if we were to have one mole of ch3, c -o -o -h, we would have, since the formula shows four total hydrogens there, we would have four moles of hydrogen.
00:46
So that is going to be important to figure out the number of hydrogens that we have.
00:51
We are also given the molar mass in the problem itself.
00:55
They tell us that one mole of ch3, c -o -o -h, is equal to c -h.
01:02
60 .06 grams of ch3, c -o -o -h.
01:10
And one other equality we're going to need because we want to know how many hydrogen atoms.
01:16
So we need to know how to convert from a mole of something to number of atoms.
01:22
So one mole of anything is equal to avagadro's number of those particles.
01:30
And we usually call it representative particles.
01:33
Because that means it could be atoms, it could be molecules, it could be ions, it could be electrons, et cetera.
01:43
But we just call them representative particles.
01:46
All right...