00:01
So to solve for this, we need the molecular formula of this compounds.
00:04
So let's start with adenine.
00:07
Adinine is c5, h5, and 5.
00:13
And to solve for its molecular weight, molecular mass, we need to get the predictable so that we could get the respective atomic masses of each element here.
00:25
So we need the atomic mass of carbon, hydrogen, and nitrogen.
00:29
Okay, so let's start.
00:30
The carbon, atomic mass of carbon is 12 .01 grams per mole.
00:35
And i won't be writing the unit because atomic masses will have the same units here.
00:40
So that means we just have to multiply this by five because we have five carbons in the molecular formula.
00:46
And then we add the mass of five hydrogen.
00:50
So that means we have 1 .01 grams multiplied by five.
00:54
And then we add nitrogen.
00:57
Nitrogen is 14 .01 grams per mole.
01:00
That's the atomic mass of nitrogen.
01:02
Multiply that by 5.
01:04
That means the molecular weight is therefore equivalent to 135 .15.
01:10
This is grams per mole.
01:12
Okay.
01:13
And then the second compound is thymine and molecular formula for that is, sorry, let's write comma...