Final answer:
Graphite is a good lubricant because of its structure and ability to reduce friction.
Step-by-step explanation:
Graphite is a good lubricant due to its unique structure. It consists of layers of carbon atoms arranged in hexagons, with each layer loosely bound to the adjacent layers. These layers can slide over each other easily, resulting in a slippery texture that reduces friction. This makes graphite an effective lubricant for applications such as in machinery or as a coating for metal parts.
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