A solution is made by mixing 569 mL of water and 238 mL ethanol. What is the concentration of ethanol in units of volume/volume percent?

Question

Quizplus · Accepted Answer

The concentration of ethanol in a solution in volume/volume percent (v/v%) is calculated by dividing the volume of ethanol by the total volume of the solution and then multiplying by 100. Here, $ \frac{238}{569 + 238} \times 100 = \frac{238}{807} \times 100 \approx 29.5\% $ v/v ethanol.

A Solution Is Made by Mixing 569 ML of Water