00:02
Hi there.
00:03
In this question, we are working with alkynes, and alkynes are hydrocarbons, which means they're only composed of carbon and hydrogen.
00:22
Alcains contain a triple bond, and when they only contain one triple bond, their general formula is going to be c to the n, h to the 2n, minus 2.
00:37
So we can use this formula to determine how many hydrogen ions there are, atoms there are rather, in each of these compounds.
00:46
So the first one says we have three carbon atoms.
00:50
So that means we have c3 and then it's going to be h to the two times three minus two.
00:58
So two times three is six.
01:00
And then if we subtract two from that, we get four.
01:04
So using that general formula, n is three.
01:06
2n is 6, subtract 2, we get 4...
