Question

Расчитайте массы MgCl2 и воды, необходимые для приготовления 2 кг раствора с массовой долей 0,06

Answer 1

M(MgCl2)=2000х0,06=120 г
m(H2O)=2000-120=1880 г

Answer 2

Calculating the Masses of MgCl2 and Water for a 2 kg Solution with a Mass Fraction of 0.06

To calculate the masses of MgCl2 and water needed to prepare a 2 kg solution with a mass fraction of 0.06, we can use the following steps:

1. Calculate the Mass of MgCl2: - The mass fraction of MgCl2 in the solution is 0.06, which means the mass of MgCl2 is 6% of the total mass of the solution. - Therefore, the mass of MgCl2 can be calculated as: ``` Mass of MgCl2 = 0.06 * 2000 g = 120 g ```

2. Calculate the Mass of Water: - Since the total mass of the solution is 2 kg (2000 g) and the mass of MgCl2 is 120 g, the mass of water can be calculated as: ``` Mass of water = Total mass of solution - Mass of MgCl2 = 2000 g - 120 g = 1880 g ```

Therefore, to prepare a 2 kg solution with a mass fraction of 0.06, you would need 120 g of MgCl2 and 1880 g of water.