Question

In 90 g of 20% aqueous salt solution 10 g
More water is added. Calculate the final
concentration of the solution.
​

Answer 1

Answer:

20% by mass aqueous salt solution means 20 g of salt are present in 100 g of solution.

Mass of solute present in 90g of solution = 20/100*90 = 18g of salt

Now,

If 10g more water is added to the solution,

Then, mass of solution = 100g

mass of solute(salt) = 18g

w/w% = 18/100*100 = 18%

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Answer 2

Explanation:

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