Question

К 230 грамм 20 процентного раствора соли добавили 22,5 г этой же соли Какова Массовая доля соли в получившемся растворе

Answer 1

230*20/100=46
46+22.5=68.5
       68.5*100/230+22.5=27

Answer 2

Calculation of Mass Fraction of Salt in the Solution

To calculate the mass fraction of salt in the resulting solution, we need to determine the total mass of the solution and the mass of the salt added.

Given: - Initial solution: 230 grams of a 20% salt solution - Additional salt added: 22.5 grams

To find the total mass of the resulting solution, we add the mass of the initial solution and the mass of the additional salt:

Total mass of resulting solution = mass of initial solution + mass of additional salt

Let's calculate the total mass of the resulting solution:

Total mass of resulting solution = 230 grams + 22.5 grams = 252.5 grams

Now, to find the mass fraction of salt in the resulting solution, we divide the mass of the salt by the total mass of the solution and multiply by 100:

Mass fraction of salt in the resulting solution = (mass of salt / total mass of solution) * 100

Mass fraction of salt in the resulting solution = (22.5 grams / 252.5 grams) * 100

Mass fraction of salt in the resulting solution ≈ 8.91%

Therefore, the mass fraction of salt in the resulting solution is approximately 8.91%.

Please note that the calculation assumes that the density of the solution remains constant when the additional salt is added.