Question

To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?

Answer 1

Let x = amt of distilled water
:
A simple equation
.25(16) = .10(x+16)
4 = .10x + 1.6

4 - 1.6 = .1x
2.4 = .1x
x = 2.4/0.1
x = 24 oz of distilled water
:
:
Prove this by seeing the amt of antiseptic is the same (only the % changes)
.25(16) = .10(24+16)
4 = .1(40)


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

Answer 2

Answer: 24 oz

Explanation:

According to concentration equation:

$C_1V_1=C_2V_2$

where $C_1$= concentration of ist solution

$V_1$= Volume of ist solution

$C_2$= concentration of 2nd solution

$V_2$= volume of 2nd solution

$25\%16oz=10\%V_2$

$V_2=40oz$

Thus to make the volume of 16oz to 40oz, she must add (40-16)oz=24 oz