Question

смешали 100 г 10%-ного раствора соли и 520 г 5% этого же раствора. концетрация соли в полученном растворе равна

Answer 1

Ответ:

Вычисли массу глюкозы в первом растворе: 100*0,1=10 г

во втором растворе: 200*0,05= 10 г.

При смешивании масса раствора: 100 + 200 = 300 г.

масса глюкозы: 10 + 10 = 20 г

Вычислим массовую долю глюкозы в полученном растворе: 20/300=0,067 или 6,7%

Answer 2

Calculating the Concentration of Salt in the Mixture

To calculate the concentration of salt in the resulting solution after mixing 100g of a 10% salt solution with 520g of a 5% salt solution, we can use the formula for mixing two solutions:

Concentration of resulting solution = (mass of solution 1 * concentration of solution 1 + mass of solution 2 * concentration of solution 2) / (mass of solution 1 + mass of solution 2)

Using this formula, we can calculate the concentration of salt in the resulting solution.

Calculation

Given: - Mass of solution 1 (m1) = 100g - Concentration of solution 1 (c1) = 10% - Mass of solution 2 (m2) = 520g - Concentration of solution 2 (c2) = 5%

Using the formula: Concentration of resulting solution = (m1 * c1 + m2 * c2) / (m1 + m2)

Substitute the given values: Concentration of resulting solution = (100g * 10% + 520g * 5%) / (100g + 520g)

Calculating the concentration of the resulting solution will give us the concentration of salt in the final mixture.

Result

The concentration of salt in the resulting solution is calculated to be approximately 5.38%.

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