Calculate the volume of water droplets
Liquids are held together by surface tension. If liquid separates from a water surface, a water drop is created. The size of the drop varies depending on which additives are in the water. So the drop of different substances has a different volume.
The formation of water droplets
- A drop is understood to mean a shape that has separated from a liquid. When this drop is retired, it is round like a ball. You can observe the formation of water droplets on the tap, in the rain and on waterfalls.
- If you look closely, you can see small water droplets that are separate from the rest of the water. The surface tension of the liquid determines the maximum size of the drops.
- In laboratories, pharmacies and medical practices, the smallest drops of medication or spice mixtures are taken from a liquid with a pipette. These drops can then be placed on a scale and weighed.
Calculate the volume of drops
- If you have taken a drop of one liter of liquid with a pipette and weighed it on a scale, you know the weight of this drop.
- Since the state of the liquid in the drop is identical to that of the liquid from which you took the drop, you can now assume the following. You now know how much the drop weighs. You also know how much the remaining liquid weighs because you can also weigh it.
- Now take the container that contains the liquid. This shows how many liters were originally in this container, i.e. before you removed the drop. Now you know the volume with one liter, the total weight of one liter of this liquid and the weight of the drop.
- Divide the weight of the original total liquid by the weight of the drop. By this calculated number you divide one liter and you have the volume of the water droplet as a result.
Water drop: amount in one liter of water - analysis
If you have a vessel with a liter of water in front of you, imagine the ...
The volume of water droplets
- The calculation you just learned about applies to all liquids. In nature, water occurs in different compositions. In addition to hydrogen and oxygen, every raindrop is also enriched with minerals, metals and other elements. This changes the surface tension of the raindrop and thus the volume of this water drop.
- It is known from laboratory tests and from pharmacies that a drop of water that comes with a normal Glass pipette is taken, has a volume of 40 microliters and a radius of 2 millimeters owns. Observations of raindrops have shown that a raindrop is a maximum of 0.5 millimeters in diameter if they are spherical in shape. The largest drops during a thunderstorm rain can be up to 9 millimeters in diameter.
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