Question

Which coefficient is needed in front of NaNO3 to balance the equation Na2S + Zn(NO3)2 → ZnS + _NaNO3?

Answer 1

i think the coefficient is na2s.

Answer 2

Coefficient    is the  number   in front of a formula  in a balanced chemical equation.

For equation to balance the  number of  atoms in product side  must  be equal  to  number  of  atoms  in reactant  side.

Putting  coefficient 2   in front  of NaNO3  balance  the equation  therefore the balanced equation.           the answer is 2