Mell What is the specific gravity?
Specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance. Because it is the ratio of two quantities that have the same dimensions (mass per unit volume), specific gravity has no dimension.
What is specific gravity answer?
Specific gravity refers to the ratio of the density of an object and the reference material. Furthermore, the specific gravity can tell us if the object will sink or float in reference material. Besides, the reference material is water that always has a density of 1 gram per cubic centimeter or 1 gram per millimeter.
What is specific gravity of water?
1 kg/l
Water has a density of 1 kg/l at 4°C. When the specific gravity is defined based on water at 4°C, then the specific gravity is equal to the density of the liquid….4.6. 2 Specific Gravity.
| Aliphatics | Specific gravity [kg/l] |
|---|---|
| Tetrachloroethylene | 1.623 |
Why do we use specific gravity?
Significance and Use 4.1 Specific gravity is an important property of fluids being related to density and viscosity. Knowing the specific gravity will allow determination of a fluid’s characteristics compared to a standard, usually water, at a specified temperature.
What is the definition of specific gravity?
Definition of specific gravity. : the ratio of the density of a substance to the density of some substance (such as pure water) taken as a standard when both densities are obtained by weighing in air.
What is the equation for specific gravity?
Equations for Specific Gravity. The specific gravity (SG) is a ratio of the density of the substance of interest (ρ i) to the density of the reference substance (ρ r). (Note: The Greek symbol rho, ρ, is commonly used to represent density.) That can be determined using the following formula: SG = ρ i ÷ ρ r = ρ i / ρ r.
What is the difference between density and specific gravity?
Density and specific gravity are both indications of how much mass a substance would occupy in a given volume. The main difference between density and specific gravity is that density is the mass per unit volume of the substance whereas specific gravity is a ratio comparing the density of one substance to the density of another reference substance.
What unit is specific gravity measured in?
Specific gravity is a measure of relative density. The specific gravity is the density of a substance divided by the density of water. Density is measured in the units kg/m 3. The density of water at 4.0°C is 1000 kg/m 3. So, the specific gravity is a unitless number. SG = specific gravity (unitless)