Volume percent (v/v %) is defined as:
volume percent = [(volume of solute) / (volume of solution)] x 100%
Volume percent is handy when preparing solutions of liquids. Concentration of a solution can be stated in volume percentages.
Be aware that volume of solution is in formula denominator, not volume of solvent. Thus to get 10% v/v solution of ethanol in water you can take 10 ml of ethanol and add enough water to have total 100 ml of resulting solution.
It is worth to mention volumes of solute and solvent cannot be simply added to get volume of solution. For instance if you add 10 ml of ethanol to 90 ml of water the volume of the solution will be less than 100 ml.
Percentage by Mass = Mass of substance of interest/Total Mass Percentage by Volume = Volume of substance of interest/Total Volume Converting from one to the other requires information about their relative densities.
density
A percentage is a pure, dimensionless number. It has neither length, nor area, volume, mass, temperature or any other dimension.
The percentages refer to the amount of a substance of interest that is contained in a compound or mixture of that and other substances. Percentage by mass = 100*mass of substance of interest/total mass. Percentage by volume = 100*volume of substance of interest/volume mass. And, incidentally, the word is definition, not diffinition.
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Percentage change in volume= Change in volume/intial volume X 100
The alcohol by volume percentage in this wine is 13.5.
Percentage by Mass = Mass of substance of interest/Total Mass Percentage by Volume = Volume of substance of interest/Total Volume Converting from one to the other requires information about their relative densities.
The alcohol by volume percentage in red wine typically ranges from 12 to 15.
They are different in non-homogeneous mixtures. Here's an example. If you put a few drops of water in a balloon, the contents are 99.9% (or so) water by weight and 99.9% (or so) air by volume.
density
A percentage is a pure, dimensionless number. It has neither length, nor area, volume, mass, temperature or any other dimension.
The volume percentage of argon in a gaseous mixture can be calculated using the ideal gas law equation, where the volume percentage of argon would be the volume of argon divided by the total volume of the mixture times 100.
The percentages refer to the amount of a substance of interest that is contained in a compound or mixture of that and other substances. Percentage by mass = 100*mass of substance of interest/total mass. Percentage by volume = 100*volume of substance of interest/volume mass. And, incidentally, the word is definition, not diffinition.
The medical term for the measurement of the percentage of red blood cells in the volume of blood is hematocrit.
it's the same as the molar percentage as 1 mol of gas will occupy 24.79dm3/mol at 25 °C no mater what the element/compound is so if you know the actual amounts calculate the molar fraction and that will give you the percentage
Hematocrit