If volumes are additive and the concentration is determined by molarity, the concentration of the diluted solution of magnesium chloride is 0.152M.
A measurement used to determine the concentration of chemical compounds in a solution is called molar concentration. It is defined with specific reference to the amount of solute in a solution. The most popular unit for measuring molar concentration is moles/liter.
The formula for calculating molar concentration is mass/molar mass divided by the volume of solution in liters.
Molar concentration is defined as the number of moles divided by the volume of the solution in liters when expressed in terms of moles.
Substitution in the formula is required if the volumes are additive.
M₁V₁=M₂V₂
M₂ = 0.550 ×40/145
M₂ = 0.152M.
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