00:01
Hello.
00:02
We're gonna start out with this question by finding the mass.
00:08
Okay, so the guy my pen.
00:12
So the mask is going to be the density times the volume.
00:15
You were given a density 2.789 and the volume is 145 million ladies one for five million ladies is the same as 145 grand percy and q.
00:35
Okay, so if you do that, i'm gonna get a master to this now.
00:43
We need to cover the molecular mass molecular way of uh it.
00:47
Now the mass of hydrogen is one carbon is uh 12 of 17, 16.
00:55
So to find the molecular weight is gonna be so let's see, we've got two of the carbons.
01:02
Right, so i'm going to be two times 12.
01:04
We have five of the hydrogen...