A coefficient which is needed in front of NaNO₃ to balance the chemical equation is: B. 2.
What is a balanced chemical equation?
A balanced chemical equation can be defined as a type of chemical equation in which the number of atoms on the reactant side (left) are equal to the number of atoms on the product side (right).
In this context, the properly balanced chemical equation for this chemical reaction is given by:
Na₂S + Zn(NO₃)₂ → ZnS + 2NaNO3
In conclusion, we can infer and logically deduce that the coefficient which is needed in front of NaNO₃ to balance the chemical equation is 2.
Read more on chemical equation here: brainly.com/question/13750908
#SPJ2
