Calculate the percentage composition of each element in Potassium chlorate, `KClO_3`.

Explanation

To calculate the percentage composition of each element in potassium chlorate (KClO₃), follow these steps:

### Step 1: Determine the molar mass of KClO₃
- **Potassium (K)**: 1 atom × 39 g/mol = 39 g/mol
- **Chlorine (Cl)**: 1 atom × 35.5 g/mol = 35.5 g/mol
- **Oxygen (O)**: 3 atoms × 16 g/mol = 48 g/mol (since the atomic mass of oxygen is approximately 16 g/mol)

**Total molar mass of KClO₃**:
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