Final answer:
We can prepare 2843.056 milliliters of a 2.5% hydrogen peroxide solution from 1 pint of a 15% stock solution by using the dilution equation.
Step-by-step explanation:
To determine how many milliliters of a 2.5% hydrogen peroxide solution can be prepared from 1 pint of a 15% hydrogen peroxide stock solution, we use the concept of dilution. The initial concentration is 15%, and we want to dilute it to end up with a 2.5% solution.
First, we convert pints to milliliters because the answer requires milliliters. There are 473.176 milliliters in 1 pint. Then we use the dilution equation C1V1 = C2V2, where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the concentration and volume of the final solution respectively. Substituting the values gives:
15% x 473.176 mL = 2.5% x V2
By solving the equation, we calculate V2, the volume of the diluted solution.
V2 = (15% x 473.176 mL) / 2.5% = (0.15 x 473.176 mL) / 0.025 = 2843.056 mL
Therefore, 2843.056 milliliters of a 2.5% hydrogen peroxide solution can be prepared from 1 pint of a 15% stock solution.