00:04
This question asked for the molecular formula of a monocyclic hydrocarbon with 14 carbons and two triple bonds.
00:11
So a hydrocarbon just means hydrogens and carbons in a chain.
00:16
Monocyclic means that there is one ring in the structure.
00:21
And then we have two triple bonds.
00:23
So we're going to start off by finding the number of hydrogens that an alkan with no rings and no double bonds, no triple bonds would have that had 14 carbons.
00:34
So there's a formula for this.
00:36
It's two times the number of carbons plus two.
00:40
So i'll give you an example with ethane.
00:43
So ch3, ch3 is ethane.
00:46
Two times the number of carbons, which is two plus two equals six, and there are six hydrogens in that structure.
00:54
So that plus two is just for the end ch3s.
00:57
So two times 14 plus two is 30...