Give balanced equations for the laboratory preparations of butene from butanol

Explanation

To prepare butene from butanol in the laboratory, we can follow these steps:

### Step 1: Identify the reactant and product
- The reactant is butanol (C₄H₉OH), and the product we want to obtain is butene (C₄H₈).

### Step 2: Write the chemical structure of butanol
- Butanol can be represented as:
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