Through looking at the graph, i feel that its the number of the temperature.
And so what are you trying to ask or are you making a statement??????????????!☺☺☺
Answer:
Carbon-Carbon Bonds
Carbon can form single, double, or even triple bonds with other carbon atoms. In a single bond, two carbon atoms share one pair of electrons. In a double bond, they share two pairs of electrons, and in a triple bond they share three pairs of electrons
