Question

A solution is prepared by dissolving 20.0 mL of pure hydrogen peroxide (H2O2) in enough water to make 200.00 mL of solution. What is the concentration of H2O2 solution?

Answer 1

concentration of the solution = mass of solute/ mass of solution

Concentration of $H_2O_2= \frac{20}{200}= 0.1$ %