Question

zinc sulfide (zns) is used in glow - in - the - dark face paint. it is produced along with hydrochloric acid (hcl) by combining a solution of zinc chloride (zncl₂) with hydrosulfuric acid (h₂s). this reaction is represented by the balanced chemical equation below.
zncl₂(aq)+h₂s(aq)→2hcl(aq)+zns(s)
determine the number of each type of atom in the reactants and products.
number of atoms in reactants number of atoms in products
zn
cl
h
s

Explanation:

Step1: Count Zn atoms in reactants

In \(ZnCl_2\), there is 1 Zn atom. So, reactants have 1 Zn atom.

Step2: Count Zn atoms in products

In \(ZnS\), there is 1 Zn atom. So, products have 1 Zn atom.

Step3: Count Cl atoms in reactants

In \(ZnCl_2\), there are 2 Cl atoms. So, reactants have 2 Cl atoms.

Step4: Count Cl atoms in products

In \(2HCl\), there are \(2\times1 = 2\) Cl atoms. So, products have 2 Cl atoms.

Answer:

	Number of atoms in reactants	Number of atoms in products
Cl	2	2
H	2	2
S	1	1