Question

balance this equation. _mg + _cl₂ --> _mgcl₂

Explanation:

Step1: Count atoms on both sides

• Left side: \(1\) \(Mg\) atom and \(2\) \(Cl\) atoms (\(Cl_2\) has \(2\) \(Cl\) atoms).
• Right side: \(1\) \(Mg\) atom and \(2\) \(Cl\) atoms (\(MgCl_2\) has \(1\) \(Mg\) and \(2\) \(Cl\) atoms).

Answer:

A. already balanced