Question

к раствору массой 8 г с массовой долей хлорида натрия 6% добавили раствор массой 14 г с массовой долей хлорида натрия 10%.Определите массовую долю NaCl в образовавшемся растворе.

Answer 1

Спрашивай если не ясно чего - то

Answer 2

Calculation of the Mass Fraction of NaCl in the Solution

To determine the mass fraction of NaCl in the resulting solution, we need to calculate the total mass of NaCl in the solution and divide it by the total mass of the solution.

Given: - Mass of the first solution (8 g) with a mass fraction of NaCl of 6%. - Mass of the second solution (14 g) with a mass fraction of NaCl of 10%.

To calculate the mass of NaCl in each solution, we multiply the mass of the solution by its mass fraction of NaCl.

For the first solution: Mass of NaCl in the first solution = 8 g * 6% = 0.48 g

For the second solution: Mass of NaCl in the second solution = 14 g * 10% = 1.4 g

To calculate the total mass of the resulting solution, we add the masses of the two solutions.

Total mass of the resulting solution = Mass of the first solution + Mass of the second solution Total mass of the resulting solution = 8 g + 14 g = 22 g

To calculate the mass fraction of NaCl in the resulting solution, we divide the total mass of NaCl by the total mass of the resulting solution and multiply by 100%.

Mass fraction of NaCl in the resulting solution = (Mass of NaCl in the first solution + Mass of NaCl in the second solution) / Total mass of the resulting solution * 100%

Mass fraction of NaCl in the resulting solution = (0.48 g + 1.4 g) / 22 g * 100% = 1.88%

Therefore, the mass fraction of NaCl in the resulting solution is 1.88%.