Volume Percent (% v/v)

( 30 mL / 100 mL) X 500 mL =150 mL of Vinegar

How would you make 500mL of 30% vinegar in water solution?

(90 mL / 3000 mL) X 100 = 3%

A solution is prepared by dissolving 90 milliliters of pure hydrogen peroxide in enough water to make 3000 milliliters of solution. What is the concentration of the hydrogen peroxide solution?

(8.0 g / 100 g) X 100 = 8%

What is the % M/M if 8.0 g copper is added to enough zinc to produce 100 g of an alloy?

(30 g / 200 g) X 100 = 15%

You have 200g of a solution that contains 30g of hydrochloric acid (HCl), what percentage of your solution is made up of hydrochloric acid (M/M)?

(1.7 g / 35.0 g) X 100 = 4.86%

Brass is a copper-zinc alloy. If the concentration of zinc is relatively low, the brass has a golden color and is often used for inexpensive jewelry. If a 35.0 g pendant contains 1.7 g of zinc, what is the percentage mass by mass of zinc in brass?

(25 mL / 200 mL) X 100 = 12.5%

Calculate the volume/volume percent solution formed by combining 25 milliliters of ethanol with enough water to make 200 milliliters of solution.

(6.3 mL / 500.0 mL) X 100 = 1.26%

If 6.3mL os acetone are dissolved in a water solution such that the total volume of solution is 500.0mL, what is the concentration of the acetone expressed as a volume percent?

( 75 mL / 375 mL) X 100 = 20%

If I make a solution by adding water to 75 mL of ethanol until the total volume of the solution is 375 mL, what's the percent by volume of ethanol in the solution?

(10 kg / 250 kg) X 100 = 4%

What is the % M/M of copper in an alloy when 10 kg of Cu is mixed with 250 kg of Zn?