concentration of the contact solution = 3 %
Explanation:
We have the following data:
10.7 g of hydrogen peroxide H₂O₂
355 g of solution
To calculate the concentration of the contact solution we use the following formula:
concentration = (mass of solute / mass of solution) × 100
concentration of the contact solution = (10.7 / 355) × 100
concentration of the contact solution = 3 %
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concentration of solutions
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