Question

В 76 г воды растворили 24 г сульфата магния MgSO4. Получили раствор с плотностью 1,27 г/мл. Чему равна молярная концентрация полученного раствора?

Answer 1

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Answer 2

Calculating Molar Concentration of the Solution

To calculate the molar concentration of the solution, we can use the formula:

Molar concentration (M) = (mass of solute in grams) / (molar mass of solute in g/mol) / (volume of solution in liters)

Given: - Mass of solute (MgSO4) = 24 g - Density of solution = 1.27 g/mL

First, we need to calculate the volume of the solution using the density and mass of the solution.

Volume of solution = (mass of solution) / (density of solution)

Volume of solution = 24 g / 1.27 g/mL

Now, we can calculate the molar concentration using the molar mass of MgSO4.

The molar mass of MgSO4 can be calculated as follows: - Molar mass of Mg = 24.305 g/mol - Molar mass of S = 32.065 g/mol - Molar mass of O (4 atoms) = 15.999 g/mol * 4 = 63.996 g/mol

Molar mass of MgSO4 = 24.305 + 32.065 + 63.996 = 120.366 g/mol

Now, we can calculate the molar concentration: Molar concentration (M) = (24 g) / (120.366 g/mol) / (volume of solution in liters)

Let's calculate the volume of the solution and the molar concentration.