How many mL of 3% aqueous hydrogen peroxide solution can you make out of 100 mL of 35% aqueous hydrogen peroxide?

To determine how many mL of 3% aqueous hydrogen peroxide solution can be made, we can use the principle of concentration and amount of substance before and after dilution.

First, let's understand the concept of dilution:

The formula for dilution is:

C1V1 = C2V2

Where:
C1 = initial concentration
V1 = initial volume
C2 = final concentration
V2 = final volume

In this case, we have an initial volume of 100 mL of 35% aqueous hydrogen peroxide (C1V1). We want to find out how much 3% aqueous hydrogen peroxide solution can be made (C2V2).

Let's plug the values into the formula:

(0.35)(100 mL) = (0.03)(V2)

Simplifying the equation:

35 = 0.03V2

Now, solve for V2:

V2 = 35 / 0.03

V2 ≈ 1166.67 mL

Therefore, approximately 1166.67 mL of 3% aqueous hydrogen peroxide solution can be made using 100 mL of 35% aqueous hydrogen peroxide.