Give an example of each of the following: Exothermic reaction involving carbon as one of the reactants.

Explanation

**Step-by-Step Solution:**

1. **Understand Exothermic Reactions:**
- Exothermic reactions are chemical reactions that release heat energy into the surroundings. This means that during the reaction, the products have lower energy than the reactants.

2. **Identify Carbon as a Reactant:**
- We need to find a reaction where carbon is one of the reactants. Carbon can be found in various forms, such as graphite or charcoal.

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