DENSITY OF LIQUIDS
DENSITY OF LIQUIDS
WHAT DOES LIQUID DENSITY MEANS
EXAMPLES
•
p
H2O
= 1000 Kg/m
3
•
p
H2O
=1 g/cm
3
•
p
Al
=2700 Kg/m
3
•
p
Al
=2.7 g/cm
3
•
p
Air
=1.29 Kg/m
3
SPECIFIC GRAVITY
•
Specific gravity is the ratio of the density of a substance to the density of a
reference substance; equivalently, it is the ratio of the mass of a substance
to the mass of a reference substance for the same given volume.
•
Specific gravity can tell us about some errors in our organs that related to
urine tests .for example: dehydration or overhydration,heart
failure,Shock,diabetes insipid us, kidney failure, kidney infection ,urinary tract
infection , hypernatremia , or low sodium levels hypernatremia, or elevated
sodium levels.
•
Density is defined as mass per unit volume. It has the SI unit kg m-3 or Kg/m-3
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.
EXERCISES
1.
What is the mass of air that occupies a rectangular room that measures
7m x 8 m x12m ? The density of air is 1.29kg/m
3
. Ans. =433.4 kg
2.
What’s the weight of the large spherical balloon filled with air that has
radius of 10m ? The mass of balloon’s skin is 0.35kg . Ans. =52,959N
3.
30L of water (p=1000kg/m
3
)is mixed with 50L of ethyl alcohol(p=789kg/m
3
)
What’s density of the mixture ? Ans. =868.125 kg/m
3
Liquid density is the mass per unit volume of a substance, while specific gravity is the ratio of a substance's density to that of a reference substance. These concepts play a crucial role in various fields such as physics, chemistry, and medicine. This content covers the definitions, examples, calculations, and practical applications of liquid density and specific gravity.
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Presentation Transcript
WHAT DOES LIQUID DENSITY MEANS Density is presented as the unit of the mass per unit of volume that will occupy According to this theory some equation has been prepared for calculating the density of the substances which is like the following : ???? ??????can be in units like g/cm3, kg/m3or g/ml3,kg/L3 Density =
EXAMPLES p H2O= 1000 Kg/m3 p H2O=1 g/cm3 p Al=2700 Kg/m3 p Al=2.7 g/cm3 p Air=1.29 Kg/m3
SPECIFIC GRAVITY Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. Specific gravity can tell us about some errors in our organs that related to urine tests .for example: dehydration or overhydration,heart failure,Shock,diabetes insipid us, kidney failure, kidney infection ,urinary tract infection , hypernatremia , or low sodium levels hypernatremia, or elevated sodium levels.
Density is defined as mass per unit volume. It has the SI unit kg m-3 or Kg/m-3 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.
EXERCISES 1. What is the mass of air that occupies a rectangular room that measures 7m x 8 m x12m ? The density of air is 1.29kg/m3 . Ans. =433.4 kg 2. What s the weight of the large spherical balloon filled with air that has radius of 10m ? The mass of balloon s skin is 0.35kg . Ans. =52,959N 3. 30L of water (p=1000kg/m3)is mixed with 50L of ethyl alcohol(p=789kg/m3 ) What s density of the mixture ? Ans. =868.125 kg/m3
