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Date: 21-5-2019
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Date: 8-8-2016
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Date: 24-8-2016
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Solutions are often prepared by diluting a more concentrated stock solution. A known volume of the stock solution is transferred to a new container and brought to a new volume. Since the total amount of solute is the same before and after dilution, we know that
where Co is the stock solution’s concentration, Vo is the volume of stock solution being diluted, Cd is the dilute solution’s concentration, and Vd is the volume of the dilute solution. Again, the type of glassware used to measure Vo and Vd depends on how exact the solution’s concentration must be known.
Example
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أمين عام أوبك: النفط الخام والغاز الطبيعي "هبة من الله"
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