I'm guessing
<span>A. The chemical equilibrium will shift to the right.</span>
Emitted/given off. exo is a way to remember that is is going away. think of a flame. the heat is emitted off onto you.
Combination or synthesis reaction
Explanation:
Charges on both magnesium and oxygen is 2. Though opposite in sign, they have equal charges so, both of them will be cancelled by each other.
As a result, formula of magnesium oxide is MgO and not
.
The student write the equation as
, it is not correct.
Therefore, given equation will be balanced as follows.

Since, number of atoms on both reactant and product side are equal. Hence, this equation is completely balanced.