How much water must be evaporated from 32 ounces of a 7% salt solution to make an 8% salt solution?
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How much water must be evaporated from 32 ounces of a 7% salt solution to make an 8% salt solution?
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Answers (1)
EmogeneApril 11, 2023 в 05:46
4 ounces of water must be evaporated from 32 ounces of a 7% salt solution to make an 8% salt solution.
To solve this problem, we can use the formula:
(C1V1 - C2V2) / C2 = amount of water to evaporate
where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
Plugging in the values, we get:
(0.07 x 32 - 0.08 x V2) / 0.08 = V2
Simplifying and solving for V2, we get:
V2 = 28
This means that we need to end up with 28 ounces of the 8% salt solution. Since we started with 32 ounces of the 7% salt solution, we need to evaporate:
32 - 28 = 4
4 ounces of water to end up with the desired concentration.
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