Question

1. hydrogen peroxide (h₂o₂) can be used to lighten or bleach hair. it is produced on an industrial scale by reacting hydrogen (h₂) and oxygen (o₂) gases in the presence of a catalyst. this chemical reaction is represented by the model below.4) determine the number of each type of atom in the reactants and products.number of atoms in reactants number of atoms in productsho

Explanation:

Step1: Count H atoms in reactants

The reactants are 1 $\text{H}_2$ molecule and 1 $\text{O}_2$ molecule. For hydrogen: $2 \times 1 = 2$

Step2: Count O atoms in reactants

For oxygen: $2 \times 1 = 2$

Step3: Count H atoms in products

The product is 1 $\text{H}_2\text{O}_2$ molecule. For hydrogen: $2 \times 1 = 2$

Step4: Count O atoms in products

For oxygen: $2 \times 1 = 2$

Answer:

	Number of atoms in reactants	Number of atoms in products
O	2	2