`2Al_2O_3 to 4Al + 3O_2` is

Options

A. chemical equation
B. balanced chemical equation
C. unbalanced chemical equation
D. none of these.

Explanation

To determine the type of the chemical equation `2Al2O3 → 4Al + 3O2`, we will analyze it step by step.

### Step 1: Identify the Reactants and Products
The reactants in the equation are aluminum oxide (Al2O3), and the products are aluminum (Al) and oxygen (O2).

### Step 2: Count the Atoms on Both Sides
We will count the number of atoms of each element on both sides of the equation.

- **Reactants:**
- Aluminum (Al): 2 x 2 = 4 atoms (from 2Al2O3)
- Oxygen (O): 2 x 3 = 6 atoms (from 2Al2O3)

- **Products:**
- Aluminum (Al): 4 atoms (from 4Al)
- Oxygen (O): 3 x 2 = 6 atoms (from 3O2)

### Step 3: Compare the Counts
Now, we compare the number of atoms of each element on both sides of the equation:
- Aluminum: 4 (reactants) = 4 (products)
- Oxygen: 6 (reactants) = 6 (products)

Since the number of atoms for each element is equal on both sides of the equation, the equation is balanced.

### Step 4: Conclusion
Since the equation is balanced, we can conclude that the given equation `2Al2O3 → 4Al + 3O2` is a **balanced chemical equation**.

### Final Answer
The given equation is a balanced chemical equation.

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