Determine the required amount of a substance for preparing a solution.
To do this, multiply the volume of the solution by its molar concentration.
In order to prepare such a solution, it is necessary to weigh and dissolve 0.5 x 5 = 2.5 mol of salt in water.
Let’s calculate the required weight of salt.
To do this, we multiply the molar weight of the salt by the chemical amount of the substance.
M CrCl3 = 52+ 35.5 x 3 = 158.5 grams / mol;
m CrCl3 = 2.5 x 158.5 = 396.25 grams;
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