Balance the following equation: underline ( )Mg+underline ( )HClarrow underline ( )MgCl_(2)+underline ( )H_(2)

To balance the chemical equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.Given equation: Mg + HCl → MgCl2 + H2Step 1: Count the number of atoms of each element on both sides of the equation.On the left side:- Mg: 1 atom- H: 1 atom- Cl: 1 atomOn the right side:- Mg: 1 atom- H: 2 atoms- Cl: 2 atomsStep 2: Balance the atoms by adjusting the coefficients.To balance the chlorine atoms, we need to have 2 chlorine atoms on the left side. So, we need to multiply the coefficient of HCl by 2.Balanced equation: Mg + 2HCl → MgCl2 + H2Step 3: Verify the balanced equation.On the left side:- Mg: 1 atom- H: 2 atoms- Cl: 2 atomsOn the right side:- Mg: 1 atom- H: 2 atoms- Cl: 2 atomsThe equation is now balanced.Answer: Mg + 2HCl → MgCl2 + H2