Which balances the equation Mg+O_(2)arrow MgO Mg+2O_(2)arrow 4MgO 2Mg+2O_(2)arrow 2MgO 2Mg+O_(2)-2MgO 2Mg+2O_(2)-4MgO

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.1. **Identify the elements involved**: Magnesium (Mg) and Oxygen (O).2. **Count the atoms on each side**: - On the left, we have 1 Mg atom and 2 O atoms (from ). - On the right, in , we have 1 Mg atom and 1 O atom.3. **Balance the magnesium atoms**: We already have 1 Mg on both sides, so they are balanced.4. **Balance the oxygen atoms**: We have 2 O atoms on the left and only 1 O atom on the right. To balance the oxygen, we need 2 MgO molecules on the right side because each MgO contains 1 O atom. This gives us 2 O atoms on the right side.5. **Adjust the magnesium atoms accordingly**: Since we now have 2 MgO molecules on the right, we need 2 Mg atoms on the left to balance the magnesium.The balanced equation is: Therefore, the correct option is: