This is the gas.
By using water, a scale, and a container, one can completely fill the container and weigh it, fully submerge the item, remove it and weigh the container with the fluid remaining, the difference in weight in grams of the water is the same as the objects volume in cubic centimeters.
An easy and low tech way to find the volume of an object is to measure the volume of water it displaces. Fill a container that has lines for measuring volume on it with enough water to fully submerge the object whose volume you will measure, but don't fill it all the way to the top. Write down the amount of water you start with, let's say 1 liter. Now put the object you want to measure into the water carefully so that you don't splash any water out and make sure that it is fully submerged. Now write down the new volume of water in the container, let's say it now reads 2.5 liters. Subtract the original volume from the new volume to find the volume of your object: 2.5L - 1L = 1.5 liters. Another way to find the volume of an object fill a container with water to the very top of the container. Place that container of water into an empty larger container. Put the object that you want to measure into the container of water slowly so that you don't spill any more water than the object pushes out on its own. When the object is fully submerged, it should have pushed out some water into the larger container. To ensure accuracy, the level of water in the water filled container that now also contains the object to be measured should still be at the very top of the container. Carefully remove the water/object filled container from the larger container so as to not spill any more water. Carefully pour the overflowed water into a smaller measuring vessel to find the volume of your object.
Assuming you can't work it out mathematically, fully submerge the object in a container filled to the top with water, then measure the volume of the water displaced.
Irregular objects can be volumetrically measured with three simple tools; a scale, a container large enough to contain the entire object, and enough water to fill the container. If you fill the container with water and weigh it, fully submerge the object in the water and remove it, compare the final mass of the container and water to the container full of water, the difference between the two in grams is the same as the volume of the object in cubic centimeters.
Close the container fully.
I would place it in a container full of liquid after measuring the liquid. I would measure the amount of liquid displaced by the object. That amount is equal to the volume of the irregular object if it is fully submerged in the liquid.
I would place it in a container full of liquid after measuring the liquid. I would measure the amount of liquid displaced by the object. That amount is equal to the volume of the irregular object if it is fully submerged in the liquid.
To find the volume of an irregular solid, use the water displacement method. Immerse the item fully into a filled container of water and measure the liquid that overflows. *If the material is porous or soluble, some improvisation will be necessary, such as a thin plastic coating.
A container of gas is always full because a gas will always take up the amout of space it is given. Just imagine a bunch of floating molecules in a container whose motion is random and bouncing all over the place. Unlike, a liquid who always has a definite amount of volume will only take up the amount of space it can.
1. Fill a vessel with a liquid (water) until it is brim full. 2. Place the lacrosse ball into the liquid until it is fully submerged, displacing the liquid. 3. Catch the displaced liquid in another container, and measure its volume with a measuring cylinder.
They're equal.
This is one way which works only of the rock contains no bits which are water soluble, and the rock is relatively small. Fill a graduated container with water to a height greater than that of the rock, record the measurement of the water meniscus. The gently submerge the rock into the container and then make a not of the new measure of the water level. The difference in the two levels is a measure of the volume of the rock.If the rock is larger, then you will need two containers, the first container needs to be large enough to hold the rock fully submerged, and the other like a large tray. Place the first container inside the second and fill it so that it is full to the brim. Then very gently lower the rock into the container. Make sure that all the overflow (and nothing more) is caught in the second container (tray). Measure the volume of liquid that has overflowed.