To 25 g of a 50% salt solution, 75 g of water was added. determine the concentration of the resulting solution.

We find the mass of salt in 25 grams of solution.

To do this, multiply the weight of the solution by the concentration of salt in it.


25 * 50% = 25 * 0.5 = 12.5 grams.

We determine the new mass of the solution after 75 grams of water has been added to it.

25 + 75 = 100 grams.

Thus, the new salt concentration will be:

12.5 / 100% * 100% = 12.5%.

Answer: The new solution contains 12.5% salt.

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