Final answer:
To calculate the percentage (by volume) of alcohol in the solution, divide the volume of alcohol by the total volume of the solution and multiply by 100. In this case, the percentage of alcohol is A) 6.94%.
Step-by-step explanation:
To calculate the percentage (by volume) of alcohol in the solution, we need to know the volume of alcohol and the total volume of the solution. In this case, we are given that 5.6 mL of alcohol is mixed with 75 mL of water. The total volume of the solution is the sum of the volumes of alcohol and water, which is 5.6 mL + 75 mL = 80.6 mL.
The percentage of alcohol in the solution can be calculated as:
(Volume of alcohol / Total volume of solution) * 100
Plugging in the values, we have:
(5.6 mL / 80.6 mL) * 100 = 6.94%
Therefore, the percentage (by volume) of alcohol in the solution is 6.94%.