Weight density of water how to#

This shows the need for average density calculations at varying temperatures. The density of air at sea level is approximately 1.293 kg/m 3 at 0☌, but 1.423 kg/m 3 at -25 ☌ and 1.146 kg/m 3 at 35 ☌. In this sense the density calculation in our tool is an average density.Īs an example of how water density changes with temperature, at 1 atm pressure water has an estimated density of 983.854 kg/m 3 at -30 ☌, 999.9720 kg/m 3 at 4 ☌ and only 958.4 kg/m 3 at 100 ☌ (boiling temperature at sea-level). A substance with uneven temperature will also have varying pressure and density. Increasing the temperature generally decreases the material density and increases its volume (increasing denominator in the formula). Increasing the pressure on a substance decreases its volume and increases its density. The density of a material or substance varies with its temperature and pressure, which is typically negligible for solids and liquids but is much greater for gases. For example, you would not need a separate volume converter.ĭensity of water and other gases & liquids Our calculator is especially useful if the input units for the calculation are different than the desired output units, in which case it will perform these unit conversions for you.

Such calculations are necessary in construction projects when one asks questions such as 'how much concrete do I need?', 'how much sand do I need?', 'how much gravel do I need?' and so on. v so the mass of the concrete will be 2400.

Weight density of water how to#

How to find density? Calculation examplesĮxample 1: If 10 m 3 of water at 0 degrees Celsius and at 1 atm pressure weights 9998.395 kg, what is the density of water under these conditions? Using the density equation above we replace the values for m and v and get Density = 9988.395 kg / (10 m 3) = 999.8395 kg/m 3.Įxample 2: If the density of concrete is 2,400 kg/m 3 and we have 50 cubic meters of concrete, how much should it weigh, approximately? Since ρ = m / v then m = ρ These are obviously not supported by our tool. Empirical or geometrical estimation of the void fraction of the volume can be performed in order to arrive at the volume of the substance itself. One should further take into account that this formula is not applicable if the measured volume contains voids (air, vacuum, liquid, gas or solid other than the substance of interest) the calculation would instead result in 'bulk density' and not volumetric mass density. If the object is of heterogeneous density a piece-wise approach may be preferred. Determining the density of a gas or liquid may require the use of specialized equipment like a hydrometer, a dasymeter or a Coriolis flow meter.

The formula is valid for homogenous materials where the density of all points in the object equals its total mass divided by its total volume. Solving for mass or volume requires straightforward transformations which we used in constructing the density calculator above. The formula for density ( ρ - Greek lower-case letter rho) expressed in terms of the body's volume ( v) and its mass ( m) is the equation: When the output is mass or volume it is in both standard metric units and imperial ones, with the units automatically being adjusted depending on how big or small the resulting value is. Grams or kilograms per litre are also available. The output if calculating density is in grams per cm 3 or kg per m 3, as well as in oz/cu in, lb/cu ft and lb per cubic yard. When solving for mass you need to know volume and density while when solving for volume you need to know the substance's mass and density. The calculator can also be used to solve for any of the other values: mass and volume. Mass density is defined as the ratio of the substance's volume to its mass. number density: the particles per unit volume. It should be differentiated with other kinds of density e.g. The density calculator calculates the volumetric mass density of a substance: the mass concentrations of a pure substance. Density of water and other gases & liquids.How to find density? Calculation examples.In chemistry, g/cm 3 is more commonly used. The density of water is about 1000 kg/m 3 or 1 g/cm 3, because the size of the gram was originally based on the mass of a cubic centimetre of water.

1 kg/m 3 ≈ 0.1604 oz/ imp gal (approximately).It is defined by dividing the SI unit of mass, the kilogram, by the SI unit of volume, the cubic metre.

m −3, or kg/m 3) is the unit of density in the International System of Units (SI).