Question

How much water must be added to 30 ounces of a 46% solution of argyrol to reduce it to a solution that is 15% argyrol?

Answer 1

62 oz

Explanation:

Let the volume of water to add be x so that the new volume will be (30+x) oz

The new concentration is now 15%, expressed in decimal as 0.15 and it is found by dividing the initial concentration by new volume

`\frac {0.46*30}{30+x}=0.15\\\frac {0.46*30}{0.15}=30+x\\92=30+x\\x=62`

The volume of water to add is equal to 62 oz