The reaction between zinc sulfate (ZnSO₄) and calcium chloride (CaCl₂) is a double displacement reaction. Here's how to balance the equation:

1. Write the unbalanced equation:

ZnSO₄ + CaCl₂ → ZnCl₂ + CaSO₄

2. Balance the equation:

The equation is already balanced! Each side has one zinc (Zn), one sulfur (S), two chlorine (Cl), one calcium (Ca), and four oxygen (O) atoms.

Therefore, the balanced chemical equation is:

ZnSO₄ + CaCl₂ → ZnCl₂ + CaSO₄