Question

What mass of water would need to be added to 4.25g salt to make the solution 28% salt?

Answer 1

Answer – Given, mass of salt = 4.25 g and solution with 28 % salt

We know solution 28 % salt means 28 g of salt in 100 g of solution.

So mass of water in the 100 g of solution is = 100 -28

                                                                 = 72 g

Now when we added 4.25 g of salt and formed 28 % solution means we can calculate the mass of solution

We know formula

Salt percent = mass of salt / total mass of solution *100%

So, mass of solution = mass of salt / salt percent *100%

                              = 4.25 g / 28 % * 100 %

                              = 15.18 g of solution

Now we know the total mass of solution is sum of the mass of salt and mass of water

So, mass of water = mass of solution – mass of salt

                           = 15.18 g – 4.25 g

                           = 10.93 g of water

So, 10.93 g of water would need to be added to 4.25g salt to make the solution 28% salt?