320ml of active ingredient is added to 680ml of an alcohol based solution. What is the final strength (v/v)? ___
To find the final strength (v/v), we first need to calculate the total volume of the solution after the active ingredient has been added. The total volume of the solution is the sum of the volume of the alcohol-based solution and the volume of the active ingredient added.
Total Volume = Volume of Alcohol-based Solution + Volume of Active Ingredient
= 680 ml + 320 ml
= 1000 ml
Now, we can calculate the final strength (v/v) by dividing the volume of the active ingredient by the total volume of the solution and multiplying by 100.
Final Strength (v/v) = (Volume of Active Ingredient / Total Volume) * 100
= (320 ml / 1000 ml) * 100
= 32%
Therefore, the final strength (v/v) is 32%.