Question

How many cubic centimeters (cc) of water must be added to 500 cc of a 25% solution of potassium chloride to reduce it to a 5% solution?

Answer 1

Answer:

400cc

Step-by-step explanation:

water sol

0% 25%

5%

25-5 5-0

20 5

water: sol = 20:5= 4:1

5 parts is 500cc

4 parts is 400cc