100% of carbon.
Lead pencils actually contain graphite, not lead. The "lead" in a pencil is a mix of graphite and clay.
Carbon content in lubricants can vary widely, but it typically ranges from 85-95%. The specific percentage will depend on the type of lubricant and its formulation.
You think probable to graphite.
Graphite mines
Graphite does not have a transparency.
No, graphite is not renewable.
No, graphite is not magnetic.
No, graphite is not radioactive.
Water Graphite is an excellent electrical conductor.
carbon and graphite are one in the same, graphite is a form of carbon a use for graphite is the lead in your pencil (it's not actually lead, it's graphite) and it is also a good lubricant ;)
No, graphite is not renewable.
Graphite is carbon.