Question

a 4% peroxide solution is mixed with a 10% peroxide solution, resulting in 100 l of an 8% solution. the table shows the amount of each solution used in the mixture.

peroxide solution

	liters of solution	peroxide concentration	total
10% peroxide	s	0.10	y
mixture	100	0.08	z

what is the value of z in the table?

○ 6
○ 7
○ 8
○ 9

Explanation:

Step1: Recall the formula for mixture problems

The total amount of peroxide in the mixture is the sum of the peroxide from each solution. For the mixture, the total peroxide \( z \) can be calculated by multiplying the volume of the mixture (100 L) by its concentration (0.08). So we use the formula \( \text{Total Peroxide} = \text{Volume} \times \text{Concentration} \).

Step2: Calculate z

Substitute the values into the formula: \( z = 100\times0.08 \).
Calculating this, we get \( z = 8 \).

Answer:

8