What does specific gravity mean?
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What does specific gravity mean?
specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance. If a substance has specific gravity less than that of a fluid, it will float on that fluid: helium-filled balloons will rise in air, oil will form a slick on water, and lead will float on mercury.
What is specific gravity and its unit?
The term specific gravity, symbolized sp gr, refers to the ratio of the density of a solid or liquid to the density of water at 4 degrees Celsius. To find the sp gr of a solid or liquid, you must know its density in kilograms per meter cubed (kg/m3) or in grams per centimeter cubed (g/cm3).
What is specific gravity and how is it measured?
Specific gravity is a unitless measurement that is derived as a ratio of either the weight of another liquid or the density of another liquid divided by the weight or density of water. Temperature must also be taken into account when determining specific gravity, since density changes in relation to temperature.
Why it is called specific gravity?
Originally Answered: Why is specific gravity called “specific” gravity? Its specific because, it is specific to water. If I say specific gravity of an object is 1.3. It means its density is 1.3 times that of a SPECIFIC substance which is water!
What is specific gravity vs density?
Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m-3). It is therefore a relative quantity with no units.
What is specific gravity and why is it important?
The term “Specific Gravity” (SG) is used to define the weight or density of a liquid as compared to the density of an equal volume of water at a specified temperature. The temperature used for measurement is usually 39.2oF (4oC), because this temperature allows water to assume its maximum density.
What is specific gravity Class 9?
Specific gravity refers to the ratio of the density of an object and the reference material. Besides, the reference material is water that always has a density of 1 gram per cubic centimeter or 1 gram per millimeter. In simple words, specific gravity defines whether an object will sink or float in water.
What does a specific gravity of 1.020 mean?
Normal results in adults generally range from 1.010 to 1.020. Abnormal results are generally those below 1.010 or above 1.020. In patients with certain kidney diseases, USG doesn’t vary with fluid intake and is called a fixed specific gravity.
What is difference between gravity and specific gravity?
The ratio of mass per unit volume is known as the density of a liquid. On the other hand, specific gravity refers to the relative density of a fluid with respect to another liquid (usually water)….Difference Between Density and Specific Gravity.
| Density | Specific Gravity |
|---|---|
| The dimensional formula of density is [M L-3]. | It is a dimensionless quantity. |
Is specific gravity the same as viscosity?
Viscosity and Specific Gravity of Liquids Viscosity – Property of a liquid that resists any force tending to produce flow. Specific Gravity – Direct ratio of any liquid’s weight to the weight of water at 62 degrees F. Water at 62 degrees F weighs 8.33 pounds per gallon and is designated 1.0 sp.
What does a higher specific gravity mean?
So if the specific gravity increase, it means the density of the material has increase and since density is the mass per unit volume ( ρ=mV ), there are different ways this is possible – either the mass increases or the volume decreases, or both.
What is Baume light and Baume heavy hydrometers?
description. The Baumé hydrometer, named for the French chemist Antoine Baumé, is calibrated to measure specific gravity on evenly spaced scales; one scale is for liquids heavier than water, and the other is for liquids lighter than water.