The difference between the specific gravity and density is that at room temperature and pressure is 1gram per 1 cubic cm is the density of water this density is treated as a standard and the density of any other material (usual liquids) is calculated relative to this is called relative density or specific gravity. Relative density (R.D) of a substance can be calculated by dividing density of a substance with the density of water. my experimental density is 5.30 g/cm3 obtained from Archimedes while the theoretical density is 5.18 g/cm3 from XRD data. A hydrometer is an instrument used for measuring the specific density of liquids based on the concept of buoyancy (Figure \(\PageIndex{2}\)). Now in the equation of relative density, only unknown is the dry unit weight of soil in its natural conditions. Substituting all the values in the formula, relative density can be calculated and hence degree of denseness of coarse grained soil can be estimated. It tells how many times a substance is heavier than water. The relative density of a substance is a pure number without any unit. A solid displaced 8.5cm3 of liquid when floating in a certain liquid and 11.5cm3 when fully submerged in the same liquid.The density of the solid is 0.8g/cm3.Determine (1)the upthrust on the solid when floating (2)The density of the liquid (3)The upthrust on the solid when fully submerged Density is determined by dividing the mass of a substance by its volume: \[Density = \frac{Mass}{Volume}\] The units of density are commonly expressed as g/cm 3 for solids, g/mL for liquids, and g/L for gases. To measure the relative density of a solid by using Archimedes’ principle. Most frozen solids will sink in a liquid of the same substance as substances are usually more dense as solids than liquids. For example, Thus, Relative density of iron is 8.5 (No unit is applied). This means that the value of density is independent of the quantity of matter present. We can calculate it by either Core Cutter Method or Sand Replacement Method . weig t 0 an equa volume 0 water The weighings required on the right hand side of this equation are best obtained by an experiment using Archimedes’ principle. Pure water has a density of 1 g/cm 3. ... density of a substance. Formula is, Water has a density of 1000kg/m³, therefore anything that floats in water has less density than that, and anything that sinks has a greater density (for example, cooking oil is around 920kg/m³; tin is 7310kg/m³; cork is 240kg/m³; and Aerogel, one of the least dense solids we know of, has a density … Solid Fraction can be used as an important Critical Process Parameter (CPP) and is determined using the following formula: SF= Solid Fraction (relative density) P e Solid Fraction, determined through instrumental methods and quantifiable data is an excellent path to achieve roller compaction operations that incorporate a QbD policy. Density is also an intensive property of matter. 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