Anthracite.
Anthracite coal has the highest percentage of carbon among the different types of coal.
Anthracite
The valance energy level contains 4 electrons in carbon.
You're looking for Nitrogen
they are the same
Anthracite coal has the highest percentage of carbon among the different types of coal.
Among well-characterized compounds, lithium carbide probably contains the highest percentage of carbon by mass. However, it might well be possible to make a compound with more carbon by inducing one substitution on graphene or one of the other multi-atomic forms of carbon.
carbon
0.5-1.5 percentage.
Anthracite
carbon
The valance energy level contains 4 electrons in carbon.
The percentage of carbon in glucose is 40 %.
There is no calcium in sugar. It contains only carbon, hydrogen and oxygen.
Here are some:Pencil lead (graphite carbon).CharcoalSteel - a small percentage of carbon is mixed with iron which increases hardness.All organic substances (such as wood, and your food) contain carbon in the molecules.
You're looking for Nitrogen
The properly written formula, SiC, shows that the substance contains equal numbers of silicon and carbon atoms. Therefore, the atomic percentage of carbon is 50 %. The question may have been intended to ask for mass percentage. The gram atomic mass of silicon is 28.0855 and the gram atomic mas of carbon is 12.011. Therefore, the mass percentage of carbon is 100[12.011/(12.011 + 28.0855)] or about 29.956, to the justified number of significant digits.