Examine the reaction.


Mg(ClO3)2(s) → MgCl2(s) + O2(g)

What coefficients will balance the equation?

1, 1, 1

1, 1, 3

1, 2, 2

2, 2, 3

1,2,2

omg thnx miss sue i got it right<3

thank you I hope its right cuz thats not even the real Ms. Sue

Ms.Sue is wrong. Lola is wrong. The correct coefficients are

Mg(ClO3)2 ==> MgCl2 + 3O2
1 1 3

To balance the equation, we need to make sure that the number of each type of atom is the same on both sides of the equation. Let's examine the reaction step by step:

Mg(ClO3)2(s) → MgCl2(s) + O2(g)

On the left side, we have 1 magnesium (Mg) atom, 2 chlorine (Cl) atoms, and 6 oxygen (O) atoms.

On the right side, we have 1 magnesium (Mg) atom, 2 chlorine (Cl) atoms, and 2 oxygen (O) atoms.

To balance the number of magnesium (Mg) atoms, we need the same number on both sides. Therefore, we need a coefficient of 1 for MgCl2.

To balance the number of chlorine (Cl) atoms, we already have the same number on both sides.

To balance the number of oxygen (O) atoms, we have 6 on the left side and 2 on the right side. Therefore, we need to add 4 more oxygen atoms to the right side. This can be achieved by adding 2 O2 molecules, giving us a coefficient of 2 for O2.

The correctly balanced equation is:

Mg(ClO3)2(s) → MgCl2(s) + 2 O2(g)

Thus, the correct choice of coefficients to balance the equation is 1, 1, 2.