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- Specific gravity (relative density) tells us how dense a substance is in comparison to water at 4°C. For example, when we say that the relative density of brass is 8.4, it means a piece of brass of any volume has mass 8.4 times that of an equal volume of water at 4°C.
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Define density and specific gravity. Perform calculations involving both density and specific gravity.
Specific Gravity or relative gravity is a dimensionless quantity that is defined as the ratio of the density of a substance to the density of the water at a specified temperature and is expressed as. \ (\begin {array} {l}SG=\frac {\rho _ {substance}} {\rho _ {H_2O}}\end {array} \)
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- The specific gravity of an object can tell us based on its value if the object will sink or float in our reference substance.
- Specific weight is the ratio of the weight of an object to the object’s volume. In the case of specific gravity, it is the ratio of an object’s den...
- Lead has the highest specific gravity.
- Lithium has the lowest specific gravity.
- A hydrometer is used to measure the specific gravity of liquids.
- Urine specific gravity test compares the density of urine with the density of water. The test gives information about how well the kidneys concentr...
- The specific gravity in a gemstone is the ratio of the density of the gemstone to the density of water.
Density. Specific gravity. Density is the mass-to-volume ratio of a substance. Density is a physical characteristic of matter. Each substance has a characteristic density that can be used as one hint in identifying a substance. Gases have very low density, usually expressed in g/L.
Specific gravity (relative density) tells us how dense a substance is in comparison to water at 4°C. For example, when we say that the relative density of brass is 8.4, it means a piece of brass of any volume has mass 8.4 times that of an equal volume of water at 4°C.
Jan 15, 2020 · Updated on January 15, 2020. Specific gravity is the ratio of the density of a substance to the density of a reference substance, which is usually water for liquids and air for gases. When water is used, it is at its highest density, which is at 4 °C or 39.2 °F.
- Anne Marie Helmenstine, Ph.D.
Density is the ratio of the mass of an object to its volume. Gases are less dense than solids and liquids. For liquids and gases, the temperature will affect the density to some extent. Specific gravity is the ratio of the density of a substance to the density of water.
Feb 3, 2023 · Earth exerts a gravitational force on every object, a phenomenon known as gravity. Gravity holds us on the surface and does not let us float freely in the air. We exert the same force on Earth that the Earth exerts on us. However, the Earth is so massive that it is unperturbed.
