2006-07-17 05:02:05 · 6 answers · asked by viinardo92 1 in Science & Mathematics ➔ Chemistry
Density is denoted as volume per mass, as in V/M,
Specific Gravity, sg , however, is the density of a material, substance or fluid AS compared to the density of water.
The key work is as compared to, generally, the density of water, ρw , is taken as 1000kg/m^3 (kilogram per meter cube). if the density of Mercury, ρm,is 13,600kg/m^3 and you want to state it in sg, well then you have to divide Pm with ρw,
ρm/ρw = 13,600 / 1000 = 13.6
There is no unit for specific gravity, just state that the specific gravity of Mercury is 13.6.
Apparently, water is the most abundant substance on earth, and scientist decided to use the density of water as a comparison to all other substances. ρ is a roman character pronounce as ‘row’. It is used to represent the density of substances in nearly all cases.
2006-07-17 06:22:28 · answer #1 · answered by Anonymous · 0⤊ 0⤋
As I recall, specific gravity relates to the density in relation to water, so SG is a ratio. For example, a material may have a density of 3800 kg/m3, but it's specific gravity will be 3.8.
2006-07-17 05:05:52 · answer #2 · answered by Emmar01 2 · 0⤊ 0⤋
density of a substance is its mass per unit volume while the specific gravity is the ratio of density of the substance to the density of water.while density has units and dimensions,the specific gravity is a unit less,dimensionless number.the unit of density in SI system of units is kg/m^3 and the dimensions ML^-3
2006-07-17 05:45:04 · answer #3 · answered by raj 7 · 0⤊ 0⤋
Specific gravity is weight per volume while density is mass per volume
2006-07-17 05:05:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
D = mass/volume
specific gravity = weight/volume
2006-07-17 05:36:05 · answer #5 · answered by shiara_blade 6 · 0⤊ 0⤋
None. They are two different terms for the same thing.
2006-07-17 05:05:42 · answer #6 · answered by Anonymous · 0⤊ 0⤋