Because water has a density of 1g/cm3, so there is a one to one ratio of mass to volume, so for example, so if a sample of water has a mass of 50 grams, its volume would be 50cm3 (mL).
You would determine the volume of water it displaces and measure it.
Mass will determine how much water is displaced by something that floats. Volume will determine how much water is displaced by something that does not (that sinks).
You could weigh it. You can also determine its density by comparing it to an equal volume of water, but first you would have to determine how much water it displaces to determine its volume.
Water displacement.
To determine the density of an object, you need its mass and volume. If the object is oddly shaped, you can determine its volume by measuring the volume of water displaced when thee object is submerged in a container of water.
Measure out a specific volume of water, such as 100mL. Determine the mass of that volume of water. Density = mass/volume, so divide the mass by the volume, and you will have the density.
density = mass/volume Determine the mass and volume of the water, and then divide the mass by the volume, and that will give you the density.
First, you must determine the volume of the water holding basin. If you can't find the figure, it can be calculated based on the USGS measurements, possible available at the USGS website. Then, determine depth of water in the basin at a point, and diviide this term by total possible depth at that point to determine ratio of fullness. If the volume is measured in cubic feet, multiply that number times 7.5 for gallonage. Any other measurement term can be converted to cubic inches. Divide the cubic inches by 231 to get gallonage.
Determine its mass on a balance. Determine its volume using water displacement. Divide the mass by the volume.
Determine its mass on a balance. Determine its volume using water displacement. Divide the mass by the volume.
Density is the ratio mass/volume. For a granular material you need a helium pycnometer.Or - more simple, if it is possible - a graduate cylinder for the measure of the volume by the displacement of water.
Yes using the equation density = mass/volume The density of water under standard conditions is approximately 1000kg/m3 So the volume = mass/density which in this case volume = mass/1000 ========================== Notice that Answer #1 also slipped "under standard conditions" in there. So the technically precise answer to the question is 'No', because you also need to know the conditions in order to know what density you're dealing with.