Add the two volumes together to determine the total volume of the final mixture: 100 ml + 250 ml = 350 ml. Use the formula x = (c ÷ V) × 100 to convert the concentration (c) and volume (V) of the final solution to a percentage. In the example, c = 60 ml and V = 350 ml.

Compute the volume of a solution in liters, given the number of moles and molarity, by dividing the number of moles by the molarity in units of moles per liter. For example, a solution containing 6.0 moles and a having a molarity of 3.0 moles per liter has a volume of 2.0 moles per liter.

2. MASS FROM CONCENTRATION

1. Volume = Mass / Concentration.
2. You don‟t need to memorize this; I never remember it. Just check your units:
3. #g=M x V x MW.
4. Sample problems:
5. Cs Vs = Cf Vf.
6. [Concentration of the stock] x [Volume of the stock] = [Concentration of the final solution] x Volume of.
7. CsVs=CfVf.
8. MORE SAMPLE PROBLEMS:

0.0104L

428 mL

25mL

21.9 mL

44.17 milliliters (mL) of a 12.0 M HCl solution is needed to make 530 mL of a 1.00 M solution.

1.00 L

So, we need 12.5 mL of the 12 M HCl diluted with water up to 50 mL to create a 3 Molar HCl solution.

If we add 8.33mL in 100 L of water we get 1 N HCl.

Add 8.26 mL of concentrated HCl to about 50 mL of distilled water, stir, then add water up to 100 mL. Mass percent solutions are defined based on the grams of solute per 100 grams of solution. Example: 20 g of sodium chloride in 100 g of solution is a 20% by mass solution.