Concentration Calculations

Calculate the mass/mass percent of 17 g of sulfuric acid in 65 g of solution.

Calculate the mass/mass percent of solute of 18.37 g of sodium chloride dissolved in 92.2 g of water Hint: Remember that a solution consists of both solute and solvent.

Steel is an alloy of iron and about 1.7% carbon. What mass of carbon is needed to make a 5.0 kg sample of steel?

88 mL of ethanol is diluted with water to a final volume of 300 mL. What is the percent by volume of ethanol in the solution?

Milk fat is present in milk. Whole milk usually contains about 5.0% milk fat by volume. If you drink a glass of milk with a volume of 250 mL, what volume of milk fat have you consumed?

What formula is best for each question?

• v/v

• 18.37 g of sodium chloride dissolved in 92.2 g of water

• m/v

• What volume of 0.25 mol/L solution can be made using 14 g of sodium hydroxide, NaOH?

• Molar Concentration

• 1¢ in $10 000

• m/m

• 60 mL of ethanol is diluted with water to a final volume of 400 mL.

• ppm

• 1.72 g of potassium permanganate, KMnO4 dissolved in 60 mL of solution