Question

Смешали 200г 3%-ного и 380г 6%-ного раствора соли. Определите массовую долю соли в полученном растворе.​

Answer 1

Ответ:

масса соли в первом растворе: 200*0,03=6г

во втором: 380*0,06=22,8г

Масса общего раствора: 200+380=580г

Общая масса соли: 6+22,8=28,8г

массовая доля в полученном растворе: 28,8/580=0,049≈4,9%.

Answer 2

Calculating the Mass Fraction of Salt in the Solution

To determine the mass fraction of salt in the resulting solution, we can use the following formula:

Mass fraction of salt = (mass of salt / total mass of solution) x 100%

Given: - 200g of 3% salt solution - 380g of 6% salt solution

First, let's calculate the mass of salt in each solution:

For the 3% salt solution: - Mass of salt = 3% of 200g = 0.03 * 200g = 6g

For the 6% salt solution: - Mass of salt = 6% of 380g = 0.06 * 380g = 22.8g

Now, let's find the total mass of the resulting solution: - Total mass = 200g + 380g = 580g

Using the formula, we can calculate the mass fraction of salt in the resulting solution:

Mass fraction of salt = (6g + 22.8g) / 580g x 100%

Mass fraction of salt = (28.8g / 580g) x 100%

Mass fraction of salt ≈ 4.97%

Therefore, the mass fraction of salt in the resulting solution is approximately 4.97%.