Question

How much water should be added to 15g of salt to obtain 15% salt solition?

Answer 1

Answer:

85% water

Explanation:

because we want 15%salt in water that's why we want 85%water

Answer 2

Answer:

concentration = 15%

mass of solute = 15g

mass of solution = 15 + x  ( x being the mass of solvent i.e. water)

concentration = mass of solute / mass of solution × 100

           15 = 15 / 15 +x  × 100

         15 + x = 100

          x = 100 - 15

           x = 85g

85 g of water needs to be added to the salt.