Look at the following chemical equation.
AgI + Na2S → Ag2S + 2NaI
What is true about this chemical equation?
A
It is balanced because the number of reactants is equal to the number of products.
B
It is unbalanced because the number of reactants is greater than the number of products.
C
It is unbalanced because the reactants contain fewer silver (Ag) atoms than the products.
D
It is balanced because the reactants contain the same number of sulfur (S) atoms as the products.